diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/pom.xml b/sdk/devtestlabs/mgmt-v2015_05_21_preview/pom.xml
new file mode 100644
index 000000000000..12c0beb97359
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/pom.xml
@@ -0,0 +1,135 @@
+<!--
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+-->
+<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+    <groupId>com.microsoft.azure.devtestlabs.v2015_05_21_preview</groupId>
+    <parent>
+        <groupId>com.microsoft.azure</groupId>
+        <artifactId>azure-arm-parent</artifactId>
+        <version>1.1.0</version>
+        <relativePath>../../../pom.management.xml</relativePath>
+    </parent>
+    <artifactId>azure-mgmt-devtestlabs</artifactId>
+    <version>1.0.0-beta</version>
+    <packaging>jar</packaging>
+    <name>Microsoft Azure SDK for DevTestLabs Management</name>
+    <description>This package contains Microsoft DevTestLabs Management SDK.</description>
+    <url>https://github.com/Azure/azure-sdk-for-java</url>
+    <licenses>
+        <license>
+            <name>The MIT License (MIT)</name>
+            <url>http://opensource.org/licenses/MIT</url>
+            <distribution>repo</distribution>
+        </license>
+    </licenses>
+    <scm>
+        <url>scm:git:https://github.com/Azure/azure-sdk-for-java</url>
+        <connection>scm:git:git@github.com:Azure/azure-sdk-for-java.git</connection>
+        <tag>HEAD</tag>
+    </scm>
+    <properties>
+        <project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
+        <legal><![CDATA[[INFO] Any downloads listed may be third party software.  Microsoft grants you no rights for third party software.]]></legal>
+    </properties>
+    <developers>
+        <developer>
+            <id>microsoft</id>
+            <name>Microsoft</name>
+        </developer>
+    </developers>
+    <dependencies>
+        <dependency>
+            <groupId>com.microsoft.azure</groupId>
+            <artifactId>azure-client-runtime</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>com.microsoft.azure</groupId>
+            <artifactId>azure-arm-client-runtime</artifactId>
+        </dependency>
+        <dependency>
+            <groupId>junit</groupId>
+            <artifactId>junit</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.microsoft.azure</groupId>
+            <artifactId>azure-client-authentication</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.microsoft.azure</groupId>
+            <artifactId>azure-mgmt-resources</artifactId>
+            <scope>test</scope>
+        </dependency>
+        <dependency>
+            <groupId>com.microsoft.azure</groupId>
+            <artifactId>azure-arm-client-runtime</artifactId>
+            <type>test-jar</type>
+            <scope>test</scope>
+            <!--Below version for test jar needs to be removed, this will be done as part of v1-runtime 1.6.7-->
+            <version>1.6.5</version>
+        </dependency>
+    </dependencies>
+    <build>
+        <plugins>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-jar-plugin</artifactId>
+                <configuration>
+                    <archive>
+                        <manifest>
+                            <addDefaultImplementationEntries>true</addDefaultImplementationEntries>
+                            <addDefaultSpecificationEntries>true</addDefaultSpecificationEntries>
+                        </manifest>
+                    </archive>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.codehaus.mojo</groupId>
+                <artifactId>build-helper-maven-plugin</artifactId>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-compiler-plugin</artifactId>
+                <version>3.1</version>
+                <configuration>
+                    <source>1.7</source>
+                    <target>1.7</target>
+                    <annotationProcessors>
+                        <annotationProcessor>
+                            com.microsoft.azure.management.apigeneration.LangDefinitionProcessor
+                        </annotationProcessor>
+                    </annotationProcessors>
+                    <debug>true</debug>
+                    <optimize>true</optimize>
+                    <compilerArguments>
+                        <AaddGeneratedAnnotation>true</AaddGeneratedAnnotation>
+                        <Adebug>true</Adebug>
+                    </compilerArguments>
+                </configuration>
+            </plugin>
+            <plugin>
+                <groupId>org.apache.maven.plugins</groupId>
+                <artifactId>maven-javadoc-plugin</artifactId>
+                <version>2.8</version>
+                <configuration>
+                    <excludePackageNames>*.implementation.*;*.utils.*;com.microsoft.schemas._2003._10.serialization;*.blob.core.search</excludePackageNames>
+                    <bottom>
+                        <![CDATA[<code>
+                            /**
+                            <br />* Copyright (c) Microsoft Corporation. All rights reserved.
+                            <br />* Licensed under the MIT License. See License.txt in the project root for
+                            <br />* license information.
+                            <br />*/
+                        </code>]]>
+                    </bottom>
+                </configuration>
+            </plugin>
+        </plugins>
+    </build>
+</project>
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ApplyArtifactsRequest.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ApplyArtifactsRequest.java
new file mode 100644
index 000000000000..9a42b5527465
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ApplyArtifactsRequest.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Request body for applying artifacts to a virtual machine.
+ */
+public class ApplyArtifactsRequest {
+    /**
+     * The list of artifacts to apply.
+     */
+    @JsonProperty(value = "artifacts")
+    private List<ArtifactInstallProperties> artifacts;
+
+    /**
+     * Get the list of artifacts to apply.
+     *
+     * @return the artifacts value
+     */
+    public List<ArtifactInstallProperties> artifacts() {
+        return this.artifacts;
+    }
+
+    /**
+     * Set the list of artifacts to apply.
+     *
+     * @param artifacts the artifacts value to set
+     * @return the ApplyArtifactsRequest object itself.
+     */
+    public ApplyArtifactsRequest withArtifacts(List<ArtifactInstallProperties> artifacts) {
+        this.artifacts = artifacts;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArmTemplateInfo.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArmTemplateInfo.java
new file mode 100644
index 000000000000..7b9571705f57
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArmTemplateInfo.java
@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.ArmTemplateInfoInner;
+
+/**
+ * Type representing ArmTemplateInfo.
+ */
+public interface ArmTemplateInfo extends HasInner<ArmTemplateInfoInner>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the parameters value.
+     */
+    Object parameters();
+
+    /**
+     * @return the template value.
+     */
+    Object template();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Artifact.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Artifact.java
new file mode 100644
index 000000000000..7f1e3972416b
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Artifact.java
@@ -0,0 +1,78 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.ArtifactInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.Map;
+
+/**
+ * Type representing Artifact.
+ */
+public interface Artifact extends HasInner<ArtifactInner>, Indexable, Refreshable<Artifact>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the description value.
+     */
+    String description();
+
+    /**
+     * @return the filePath value.
+     */
+    String filePath();
+
+    /**
+     * @return the icon value.
+     */
+    String icon();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the parameters value.
+     */
+    Object parameters();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the targetOsType value.
+     */
+    String targetOsType();
+
+    /**
+     * @return the title value.
+     */
+    String title();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactDeploymentStatusProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactDeploymentStatusProperties.java
new file mode 100644
index 000000000000..ff92dbaf26f1
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactDeploymentStatusProperties.java
@@ -0,0 +1,95 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of an artifact deployment.
+ */
+public class ArtifactDeploymentStatusProperties {
+    /**
+     * The deployment status of the artifact.
+     */
+    @JsonProperty(value = "deploymentStatus")
+    private String deploymentStatus;
+
+    /**
+     * The total count of the artifacts that were successfully applied.
+     */
+    @JsonProperty(value = "artifactsApplied")
+    private Integer artifactsApplied;
+
+    /**
+     * The total count of the artifacts that were tentatively applied.
+     */
+    @JsonProperty(value = "totalArtifacts")
+    private Integer totalArtifacts;
+
+    /**
+     * Get the deployment status of the artifact.
+     *
+     * @return the deploymentStatus value
+     */
+    public String deploymentStatus() {
+        return this.deploymentStatus;
+    }
+
+    /**
+     * Set the deployment status of the artifact.
+     *
+     * @param deploymentStatus the deploymentStatus value to set
+     * @return the ArtifactDeploymentStatusProperties object itself.
+     */
+    public ArtifactDeploymentStatusProperties withDeploymentStatus(String deploymentStatus) {
+        this.deploymentStatus = deploymentStatus;
+        return this;
+    }
+
+    /**
+     * Get the total count of the artifacts that were successfully applied.
+     *
+     * @return the artifactsApplied value
+     */
+    public Integer artifactsApplied() {
+        return this.artifactsApplied;
+    }
+
+    /**
+     * Set the total count of the artifacts that were successfully applied.
+     *
+     * @param artifactsApplied the artifactsApplied value to set
+     * @return the ArtifactDeploymentStatusProperties object itself.
+     */
+    public ArtifactDeploymentStatusProperties withArtifactsApplied(Integer artifactsApplied) {
+        this.artifactsApplied = artifactsApplied;
+        return this;
+    }
+
+    /**
+     * Get the total count of the artifacts that were tentatively applied.
+     *
+     * @return the totalArtifacts value
+     */
+    public Integer totalArtifacts() {
+        return this.totalArtifacts;
+    }
+
+    /**
+     * Set the total count of the artifacts that were tentatively applied.
+     *
+     * @param totalArtifacts the totalArtifacts value to set
+     * @return the ArtifactDeploymentStatusProperties object itself.
+     */
+    public ArtifactDeploymentStatusProperties withTotalArtifacts(Integer totalArtifacts) {
+        this.totalArtifacts = totalArtifacts;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactInstallProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactInstallProperties.java
new file mode 100644
index 000000000000..1dd57a61313d
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactInstallProperties.java
@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of an artifact.
+ */
+public class ArtifactInstallProperties {
+    /**
+     * The artifact's identifier.
+     */
+    @JsonProperty(value = "artifactId")
+    private String artifactId;
+
+    /**
+     * The parameters of the artifact.
+     */
+    @JsonProperty(value = "parameters")
+    private List<ArtifactParameterProperties> parameters;
+
+    /**
+     * Get the artifact's identifier.
+     *
+     * @return the artifactId value
+     */
+    public String artifactId() {
+        return this.artifactId;
+    }
+
+    /**
+     * Set the artifact's identifier.
+     *
+     * @param artifactId the artifactId value to set
+     * @return the ArtifactInstallProperties object itself.
+     */
+    public ArtifactInstallProperties withArtifactId(String artifactId) {
+        this.artifactId = artifactId;
+        return this;
+    }
+
+    /**
+     * Get the parameters of the artifact.
+     *
+     * @return the parameters value
+     */
+    public List<ArtifactParameterProperties> parameters() {
+        return this.parameters;
+    }
+
+    /**
+     * Set the parameters of the artifact.
+     *
+     * @param parameters the parameters value to set
+     * @return the ArtifactInstallProperties object itself.
+     */
+    public ArtifactInstallProperties withParameters(List<ArtifactParameterProperties> parameters) {
+        this.parameters = parameters;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactParameterProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactParameterProperties.java
new file mode 100644
index 000000000000..81f42fe7d100
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactParameterProperties.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of an artifact parameter.
+ */
+public class ArtifactParameterProperties {
+    /**
+     * The name of the artifact parameter.
+     */
+    @JsonProperty(value = "name")
+    private String name;
+
+    /**
+     * The value of the artifact parameter.
+     */
+    @JsonProperty(value = "value")
+    private String value;
+
+    /**
+     * Get the name of the artifact parameter.
+     *
+     * @return the name value
+     */
+    public String name() {
+        return this.name;
+    }
+
+    /**
+     * Set the name of the artifact parameter.
+     *
+     * @param name the name value to set
+     * @return the ArtifactParameterProperties object itself.
+     */
+    public ArtifactParameterProperties withName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get the value of the artifact parameter.
+     *
+     * @return the value value
+     */
+    public String value() {
+        return this.value;
+    }
+
+    /**
+     * Set the value of the artifact parameter.
+     *
+     * @param value the value value to set
+     * @return the ArtifactParameterProperties object itself.
+     */
+    public ArtifactParameterProperties withValue(String value) {
+        this.value = value;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactSource.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactSource.java
new file mode 100644
index 000000000000..d65622666a48
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactSource.java
@@ -0,0 +1,367 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.ArtifactSourceInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.Map;
+
+/**
+ * Type representing ArtifactSource.
+ */
+public interface ArtifactSource extends HasInner<ArtifactSourceInner>, Indexable, Refreshable<ArtifactSource>, Updatable<ArtifactSource.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the branchRef value.
+     */
+    String branchRef();
+
+    /**
+     * @return the displayName value.
+     */
+    String displayName();
+
+    /**
+     * @return the folderPath value.
+     */
+    String folderPath();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the securityToken value.
+     */
+    String securityToken();
+
+    /**
+     * @return the sourceType value.
+     */
+    SourceControlType sourceType();
+
+    /**
+     * @return the status value.
+     */
+    EnableStatus status();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * @return the uri value.
+     */
+    String uri();
+
+    /**
+     * The entirety of the ArtifactSource definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithLab, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of ArtifactSource definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a ArtifactSource definition.
+         */
+        interface Blank extends WithLab {
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify Lab.
+         */
+        interface WithLab {
+           /**
+            * Specifies resourceGroupName, labName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @return the next definition stage
+            */
+            WithLocation withExistingLab(String resourceGroupName, String labName);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify BranchRef.
+         */
+        interface WithBranchRef {
+            /**
+             * Specifies branchRef.
+             * @param branchRef The branch reference of the artifact source
+             * @return the next definition stage
+             */
+            WithCreate withBranchRef(String branchRef);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify DisplayName.
+         */
+        interface WithDisplayName {
+            /**
+             * Specifies displayName.
+             * @param displayName The display name of the artifact source
+             * @return the next definition stage
+             */
+            WithCreate withDisplayName(String displayName);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify FolderPath.
+         */
+        interface WithFolderPath {
+            /**
+             * Specifies folderPath.
+             * @param folderPath The folder path of the artifact source
+             * @return the next definition stage
+             */
+            WithCreate withFolderPath(String folderPath);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify SecurityToken.
+         */
+        interface WithSecurityToken {
+            /**
+             * Specifies securityToken.
+             * @param securityToken The security token of the artifact source
+             * @return the next definition stage
+             */
+            WithCreate withSecurityToken(String securityToken);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify SourceType.
+         */
+        interface WithSourceType {
+            /**
+             * Specifies sourceType.
+             * @param sourceType The type of the artifact source. Possible values include: 'VsoGit', 'GitHub'
+             * @return the next definition stage
+             */
+            WithCreate withSourceType(SourceControlType sourceType);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify Status.
+         */
+        interface WithStatus {
+            /**
+             * Specifies status.
+             * @param status The status of the artifact source. Possible values include: 'Enabled', 'Disabled'
+             * @return the next definition stage
+             */
+            WithCreate withStatus(EnableStatus status);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the artifactsource definition allowing to specify Uri.
+         */
+        interface WithUri {
+            /**
+             * Specifies uri.
+             * @param uri The URI of the artifact source
+             * @return the next definition stage
+             */
+            WithCreate withUri(String uri);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<ArtifactSource>, DefinitionStages.WithBranchRef, DefinitionStages.WithDisplayName, DefinitionStages.WithFolderPath, DefinitionStages.WithProvisioningState, DefinitionStages.WithSecurityToken, DefinitionStages.WithSourceType, DefinitionStages.WithStatus, DefinitionStages.WithTags, DefinitionStages.WithUri {
+        }
+    }
+    /**
+     * The template for a ArtifactSource update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<ArtifactSource>, UpdateStages.WithBranchRef, UpdateStages.WithDisplayName, UpdateStages.WithFolderPath, UpdateStages.WithProvisioningState, UpdateStages.WithSecurityToken, UpdateStages.WithSourceType, UpdateStages.WithStatus, UpdateStages.WithTags, UpdateStages.WithUri {
+    }
+
+    /**
+     * Grouping of ArtifactSource update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the artifactsource update allowing to specify BranchRef.
+         */
+        interface WithBranchRef {
+            /**
+             * Specifies branchRef.
+             * @param branchRef The branch reference of the artifact source
+             * @return the next update stage
+             */
+            Update withBranchRef(String branchRef);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify DisplayName.
+         */
+        interface WithDisplayName {
+            /**
+             * Specifies displayName.
+             * @param displayName The display name of the artifact source
+             * @return the next update stage
+             */
+            Update withDisplayName(String displayName);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify FolderPath.
+         */
+        interface WithFolderPath {
+            /**
+             * Specifies folderPath.
+             * @param folderPath The folder path of the artifact source
+             * @return the next update stage
+             */
+            Update withFolderPath(String folderPath);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify SecurityToken.
+         */
+        interface WithSecurityToken {
+            /**
+             * Specifies securityToken.
+             * @param securityToken The security token of the artifact source
+             * @return the next update stage
+             */
+            Update withSecurityToken(String securityToken);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify SourceType.
+         */
+        interface WithSourceType {
+            /**
+             * Specifies sourceType.
+             * @param sourceType The type of the artifact source. Possible values include: 'VsoGit', 'GitHub'
+             * @return the next update stage
+             */
+            Update withSourceType(SourceControlType sourceType);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify Status.
+         */
+        interface WithStatus {
+            /**
+             * Specifies status.
+             * @param status The status of the artifact source. Possible values include: 'Enabled', 'Disabled'
+             * @return the next update stage
+             */
+            Update withStatus(EnableStatus status);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the artifactsource update allowing to specify Uri.
+         */
+        interface WithUri {
+            /**
+             * Specifies uri.
+             * @param uri The URI of the artifact source
+             * @return the next update stage
+             */
+            Update withUri(String uri);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactSources.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactSources.java
new file mode 100644
index 000000000000..e339f425ace3
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ArtifactSources.java
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.ArtifactSourcesInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing ArtifactSources.
+ */
+public interface ArtifactSources extends SupportsCreating<ArtifactSource.DefinitionStages.Blank>, HasInner<ArtifactSourcesInner> {
+    /**
+     * Get artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<ArtifactSource> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<ArtifactSource> listAsync(final String resourceGroupName, final String labName);
+
+    /**
+     * Delete artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Artifacts.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Artifacts.java
new file mode 100644
index 000000000000..887c490b2248
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Artifacts.java
@@ -0,0 +1,55 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.ArtifactsInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing Artifacts.
+ */
+public interface Artifacts extends HasInner<ArtifactsInner> {
+    /**
+     * Generates an ARM template for the given artifact, uploads the required files to a storage account, and validates the generated artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @param generateArmTemplateRequest the GenerateArmTemplateRequest value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<ArmTemplateInfo> generateArmTemplateAsync(String resourceGroupName, String labName, String artifactSourceName, String name, GenerateArmTemplateRequest generateArmTemplateRequest);
+
+    /**
+     * Get artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Artifact> getResourceAsync(String resourceGroupName, String labName, String artifactSourceName, String name);
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Artifact> listAsync(final String resourceGroupName, final String labName, final String artifactSourceName);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Cost.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Cost.java
new file mode 100644
index 000000000000..a868f9dfcd52
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Cost.java
@@ -0,0 +1,59 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.CostInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Type representing Cost.
+ */
+public interface Cost extends HasInner<CostInner>, Indexable, Refreshable<Cost>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the costs value.
+     */
+    List<CostPerDayProperties> costs();
+
+    /**
+     * @return the currencyCode value.
+     */
+    String currencyCode();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostInsight.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostInsight.java
new file mode 100644
index 000000000000..3a90573ac25b
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostInsight.java
@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.CostInsightInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.Map;
+import java.util.List;
+
+/**
+ * Type representing CostInsight.
+ */
+public interface CostInsight extends HasInner<CostInsightInner>, Indexable, Refreshable<CostInsight>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the currencyCode value.
+     */
+    String currencyCode();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * @return the vmCosts value.
+     */
+    List<VMCostProperties> vmCosts();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostInsights.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostInsights.java
new file mode 100644
index 000000000000..864f74f3f33d
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostInsights.java
@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import rx.Observable;
+import rx.Completable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.CostInsightsInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing CostInsights.
+ */
+public interface CostInsights extends HasInner<CostInsightsInner> {
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable refreshDataAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * Get cost insight.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<CostInsight> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<CostInsight> listAsync(final String resourceGroupName, final String labName);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostPerDayProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostPerDayProperties.java
new file mode 100644
index 000000000000..104f26c56dcf
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostPerDayProperties.java
@@ -0,0 +1,97 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import org.joda.time.DateTime;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The per-day properties of a cost item.
+ */
+public class CostPerDayProperties {
+    /**
+     * The date of the cost item.
+     */
+    @JsonProperty(value = "date")
+    private DateTime dateProperty;
+
+    /**
+     * The cost of the cost item.
+     */
+    @JsonProperty(value = "cost")
+    private Double cost;
+
+    /**
+     * The type of the cost. Possible values include: 'Unavailable',
+     * 'Reported', 'Projected'.
+     */
+    @JsonProperty(value = "costType")
+    private CostPropertyType costType;
+
+    /**
+     * Get the date of the cost item.
+     *
+     * @return the dateProperty value
+     */
+    public DateTime dateProperty() {
+        return this.dateProperty;
+    }
+
+    /**
+     * Set the date of the cost item.
+     *
+     * @param dateProperty the dateProperty value to set
+     * @return the CostPerDayProperties object itself.
+     */
+    public CostPerDayProperties withDateProperty(DateTime dateProperty) {
+        this.dateProperty = dateProperty;
+        return this;
+    }
+
+    /**
+     * Get the cost of the cost item.
+     *
+     * @return the cost value
+     */
+    public Double cost() {
+        return this.cost;
+    }
+
+    /**
+     * Set the cost of the cost item.
+     *
+     * @param cost the cost value to set
+     * @return the CostPerDayProperties object itself.
+     */
+    public CostPerDayProperties withCost(Double cost) {
+        this.cost = cost;
+        return this;
+    }
+
+    /**
+     * Get the type of the cost. Possible values include: 'Unavailable', 'Reported', 'Projected'.
+     *
+     * @return the costType value
+     */
+    public CostPropertyType costType() {
+        return this.costType;
+    }
+
+    /**
+     * Set the type of the cost. Possible values include: 'Unavailable', 'Reported', 'Projected'.
+     *
+     * @param costType the costType value to set
+     * @return the CostPerDayProperties object itself.
+     */
+    public CostPerDayProperties withCostType(CostPropertyType costType) {
+        this.costType = costType;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostPropertyType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostPropertyType.java
new file mode 100644
index 000000000000..07d6dc6f8dec
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CostPropertyType.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for CostPropertyType.
+ */
+public final class CostPropertyType extends ExpandableStringEnum<CostPropertyType> {
+    /** Static value Unavailable for CostPropertyType. */
+    public static final CostPropertyType UNAVAILABLE = fromString("Unavailable");
+
+    /** Static value Reported for CostPropertyType. */
+    public static final CostPropertyType REPORTED = fromString("Reported");
+
+    /** Static value Projected for CostPropertyType. */
+    public static final CostPropertyType PROJECTED = fromString("Projected");
+
+    /**
+     * Creates or finds a CostPropertyType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding CostPropertyType
+     */
+    @JsonCreator
+    public static CostPropertyType fromString(String name) {
+        return fromString(name, CostPropertyType.class);
+    }
+
+    /**
+     * @return known CostPropertyType values
+     */
+    public static Collection<CostPropertyType> values() {
+        return values(CostPropertyType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Costs.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Costs.java
new file mode 100644
index 000000000000..50989f2cd601
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Costs.java
@@ -0,0 +1,52 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import rx.Observable;
+import rx.Completable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.CostsInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing Costs.
+ */
+public interface Costs extends HasInner<CostsInner> {
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable refreshDataAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * Get cost.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Cost> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Cost> listAsync(final String resourceGroupName, final String labName);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImage.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImage.java
new file mode 100644
index 000000000000..d47293300c3a
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImage.java
@@ -0,0 +1,339 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.CustomImageInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import org.joda.time.DateTime;
+import java.util.Map;
+
+/**
+ * Type representing CustomImage.
+ */
+public interface CustomImage extends HasInner<CustomImageInner>, Indexable, Refreshable<CustomImage>, Updatable<CustomImage.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the author value.
+     */
+    String author();
+
+    /**
+     * @return the creationDate value.
+     */
+    DateTime creationDate();
+
+    /**
+     * @return the description value.
+     */
+    String description();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the osType value.
+     */
+    CustomImageOsType osType();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * @return the vhd value.
+     */
+    CustomImagePropertiesCustom vhd();
+
+    /**
+     * @return the vm value.
+     */
+    CustomImagePropertiesFromVm vm();
+
+    /**
+     * The entirety of the CustomImage definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithLab, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of CustomImage definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a CustomImage definition.
+         */
+        interface Blank extends WithLab {
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Lab.
+         */
+        interface WithLab {
+           /**
+            * Specifies resourceGroupName, labName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @return the next definition stage
+            */
+            WithLocation withExistingLab(String resourceGroupName, String labName);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Author.
+         */
+        interface WithAuthor {
+            /**
+             * Specifies author.
+             * @param author The author of the custom image
+             * @return the next definition stage
+             */
+            WithCreate withAuthor(String author);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify CreationDate.
+         */
+        interface WithCreationDate {
+            /**
+             * Specifies creationDate.
+             * @param creationDate The creation date of the custom image
+             * @return the next definition stage
+             */
+            WithCreate withCreationDate(DateTime creationDate);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the custom image
+             * @return the next definition stage
+             */
+            WithCreate withDescription(String description);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify OsType.
+         */
+        interface WithOsType {
+            /**
+             * Specifies osType.
+             * @param osType The OS type of the custom image. Possible values include: 'Windows', 'Linux', 'None'
+             * @return the next definition stage
+             */
+            WithCreate withOsType(CustomImageOsType osType);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Vhd.
+         */
+        interface WithVhd {
+            /**
+             * Specifies vhd.
+             * @param vhd The VHD from which the image is to be created
+             * @return the next definition stage
+             */
+            WithCreate withVhd(CustomImagePropertiesCustom vhd);
+        }
+
+        /**
+         * The stage of the customimage definition allowing to specify Vm.
+         */
+        interface WithVm {
+            /**
+             * Specifies vm.
+             * @param vm the vm parameter value
+             * @return the next definition stage
+             */
+            WithCreate withVm(CustomImagePropertiesFromVm vm);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<CustomImage>, DefinitionStages.WithAuthor, DefinitionStages.WithCreationDate, DefinitionStages.WithDescription, DefinitionStages.WithOsType, DefinitionStages.WithProvisioningState, DefinitionStages.WithTags, DefinitionStages.WithVhd, DefinitionStages.WithVm {
+        }
+    }
+    /**
+     * The template for a CustomImage update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<CustomImage>, UpdateStages.WithAuthor, UpdateStages.WithCreationDate, UpdateStages.WithDescription, UpdateStages.WithOsType, UpdateStages.WithProvisioningState, UpdateStages.WithTags, UpdateStages.WithVhd, UpdateStages.WithVm {
+    }
+
+    /**
+     * Grouping of CustomImage update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the customimage update allowing to specify Author.
+         */
+        interface WithAuthor {
+            /**
+             * Specifies author.
+             * @param author The author of the custom image
+             * @return the next update stage
+             */
+            Update withAuthor(String author);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify CreationDate.
+         */
+        interface WithCreationDate {
+            /**
+             * Specifies creationDate.
+             * @param creationDate The creation date of the custom image
+             * @return the next update stage
+             */
+            Update withCreationDate(DateTime creationDate);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the custom image
+             * @return the next update stage
+             */
+            Update withDescription(String description);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify OsType.
+         */
+        interface WithOsType {
+            /**
+             * Specifies osType.
+             * @param osType The OS type of the custom image. Possible values include: 'Windows', 'Linux', 'None'
+             * @return the next update stage
+             */
+            Update withOsType(CustomImageOsType osType);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify Vhd.
+         */
+        interface WithVhd {
+            /**
+             * Specifies vhd.
+             * @param vhd The VHD from which the image is to be created
+             * @return the next update stage
+             */
+            Update withVhd(CustomImagePropertiesCustom vhd);
+        }
+
+        /**
+         * The stage of the customimage update allowing to specify Vm.
+         */
+        interface WithVm {
+            /**
+             * Specifies vm.
+             * @param vm the vm parameter value
+             * @return the next update stage
+             */
+            Update withVm(CustomImagePropertiesFromVm vm);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImageOsType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImageOsType.java
new file mode 100644
index 000000000000..018f94bbd314
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImageOsType.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for CustomImageOsType.
+ */
+public final class CustomImageOsType extends ExpandableStringEnum<CustomImageOsType> {
+    /** Static value Windows for CustomImageOsType. */
+    public static final CustomImageOsType WINDOWS = fromString("Windows");
+
+    /** Static value Linux for CustomImageOsType. */
+    public static final CustomImageOsType LINUX = fromString("Linux");
+
+    /** Static value None for CustomImageOsType. */
+    public static final CustomImageOsType NONE = fromString("None");
+
+    /**
+     * Creates or finds a CustomImageOsType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding CustomImageOsType
+     */
+    @JsonCreator
+    public static CustomImageOsType fromString(String name) {
+        return fromString(name, CustomImageOsType.class);
+    }
+
+    /**
+     * @return known CustomImageOsType values
+     */
+    public static Collection<CustomImageOsType> values() {
+        return values(CustomImageOsType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImagePropertiesCustom.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImagePropertiesCustom.java
new file mode 100644
index 000000000000..a45188d91d98
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImagePropertiesCustom.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties for creating a custom image from a VHD.
+ */
+public class CustomImagePropertiesCustom {
+    /**
+     * The image name.
+     */
+    @JsonProperty(value = "imageName")
+    private String imageName;
+
+    /**
+     * Indicates whether sysprep has been run on the VHD.
+     */
+    @JsonProperty(value = "sysPrep")
+    private Boolean sysPrep;
+
+    /**
+     * Get the image name.
+     *
+     * @return the imageName value
+     */
+    public String imageName() {
+        return this.imageName;
+    }
+
+    /**
+     * Set the image name.
+     *
+     * @param imageName the imageName value to set
+     * @return the CustomImagePropertiesCustom object itself.
+     */
+    public CustomImagePropertiesCustom withImageName(String imageName) {
+        this.imageName = imageName;
+        return this;
+    }
+
+    /**
+     * Get indicates whether sysprep has been run on the VHD.
+     *
+     * @return the sysPrep value
+     */
+    public Boolean sysPrep() {
+        return this.sysPrep;
+    }
+
+    /**
+     * Set indicates whether sysprep has been run on the VHD.
+     *
+     * @param sysPrep the sysPrep value to set
+     * @return the CustomImagePropertiesCustom object itself.
+     */
+    public CustomImagePropertiesCustom withSysPrep(Boolean sysPrep) {
+        this.sysPrep = sysPrep;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImagePropertiesFromVm.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImagePropertiesFromVm.java
new file mode 100644
index 000000000000..27ba91b57b65
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImagePropertiesFromVm.java
@@ -0,0 +1,121 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties for creating a custom image from a virtual machine.
+ */
+public class CustomImagePropertiesFromVm {
+    /**
+     * The source vm identifier.
+     */
+    @JsonProperty(value = "sourceVmId")
+    private String sourceVmId;
+
+    /**
+     * Indicates whether sysprep has been run on the VHD.
+     */
+    @JsonProperty(value = "sysPrep")
+    private Boolean sysPrep;
+
+    /**
+     * The Windows OS information of the VM.
+     */
+    @JsonProperty(value = "windowsOsInfo")
+    private WindowsOsInfo windowsOsInfo;
+
+    /**
+     * The Linux OS information of the VM.
+     */
+    @JsonProperty(value = "linuxOsInfo")
+    private LinuxOsInfo linuxOsInfo;
+
+    /**
+     * Get the source vm identifier.
+     *
+     * @return the sourceVmId value
+     */
+    public String sourceVmId() {
+        return this.sourceVmId;
+    }
+
+    /**
+     * Set the source vm identifier.
+     *
+     * @param sourceVmId the sourceVmId value to set
+     * @return the CustomImagePropertiesFromVm object itself.
+     */
+    public CustomImagePropertiesFromVm withSourceVmId(String sourceVmId) {
+        this.sourceVmId = sourceVmId;
+        return this;
+    }
+
+    /**
+     * Get indicates whether sysprep has been run on the VHD.
+     *
+     * @return the sysPrep value
+     */
+    public Boolean sysPrep() {
+        return this.sysPrep;
+    }
+
+    /**
+     * Set indicates whether sysprep has been run on the VHD.
+     *
+     * @param sysPrep the sysPrep value to set
+     * @return the CustomImagePropertiesFromVm object itself.
+     */
+    public CustomImagePropertiesFromVm withSysPrep(Boolean sysPrep) {
+        this.sysPrep = sysPrep;
+        return this;
+    }
+
+    /**
+     * Get the Windows OS information of the VM.
+     *
+     * @return the windowsOsInfo value
+     */
+    public WindowsOsInfo windowsOsInfo() {
+        return this.windowsOsInfo;
+    }
+
+    /**
+     * Set the Windows OS information of the VM.
+     *
+     * @param windowsOsInfo the windowsOsInfo value to set
+     * @return the CustomImagePropertiesFromVm object itself.
+     */
+    public CustomImagePropertiesFromVm withWindowsOsInfo(WindowsOsInfo windowsOsInfo) {
+        this.windowsOsInfo = windowsOsInfo;
+        return this;
+    }
+
+    /**
+     * Get the Linux OS information of the VM.
+     *
+     * @return the linuxOsInfo value
+     */
+    public LinuxOsInfo linuxOsInfo() {
+        return this.linuxOsInfo;
+    }
+
+    /**
+     * Set the Linux OS information of the VM.
+     *
+     * @param linuxOsInfo the linuxOsInfo value to set
+     * @return the CustomImagePropertiesFromVm object itself.
+     */
+    public CustomImagePropertiesFromVm withLinuxOsInfo(LinuxOsInfo linuxOsInfo) {
+        this.linuxOsInfo = linuxOsInfo;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImages.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImages.java
new file mode 100644
index 000000000000..abb56ae5d52e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/CustomImages.java
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.CustomImagesInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing CustomImages.
+ */
+public interface CustomImages extends SupportsCreating<CustomImage.DefinitionStages.Blank>, HasInner<CustomImagesInner> {
+    /**
+     * Get custom image.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<CustomImage> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<CustomImage> listAsync(final String resourceGroupName, final String labName);
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/DayDetails.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/DayDetails.java
new file mode 100644
index 000000000000..583bade899fd
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/DayDetails.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of a daily schedule.
+ */
+public class DayDetails {
+    /**
+     * The time property.
+     */
+    @JsonProperty(value = "time")
+    private String time;
+
+    /**
+     * Get the time value.
+     *
+     * @return the time value
+     */
+    public String time() {
+        return this.time;
+    }
+
+    /**
+     * Set the time value.
+     *
+     * @param time the time value to set
+     * @return the DayDetails object itself.
+     */
+    public DayDetails withTime(String time) {
+        this.time = time;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EnableStatus.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EnableStatus.java
new file mode 100644
index 000000000000..5cd67281d168
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EnableStatus.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for EnableStatus.
+ */
+public final class EnableStatus extends ExpandableStringEnum<EnableStatus> {
+    /** Static value Enabled for EnableStatus. */
+    public static final EnableStatus ENABLED = fromString("Enabled");
+
+    /** Static value Disabled for EnableStatus. */
+    public static final EnableStatus DISABLED = fromString("Disabled");
+
+    /**
+     * Creates or finds a EnableStatus from its string representation.
+     * @param name a name to look for
+     * @return the corresponding EnableStatus
+     */
+    @JsonCreator
+    public static EnableStatus fromString(String name) {
+        return fromString(name, EnableStatus.class);
+    }
+
+    /**
+     * @return known EnableStatus values
+     */
+    public static Collection<EnableStatus> values() {
+        return values(EnableStatus.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesProperties.java
new file mode 100644
index 000000000000..f3a05a0aa04e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesProperties.java
@@ -0,0 +1,95 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties for evaluating a policy set.
+ */
+public class EvaluatePoliciesProperties {
+    /**
+     * The fact name.
+     */
+    @JsonProperty(value = "factName")
+    private String factName;
+
+    /**
+     * The fact data.
+     */
+    @JsonProperty(value = "factData")
+    private String factData;
+
+    /**
+     * The value offset.
+     */
+    @JsonProperty(value = "valueOffset")
+    private String valueOffset;
+
+    /**
+     * Get the fact name.
+     *
+     * @return the factName value
+     */
+    public String factName() {
+        return this.factName;
+    }
+
+    /**
+     * Set the fact name.
+     *
+     * @param factName the factName value to set
+     * @return the EvaluatePoliciesProperties object itself.
+     */
+    public EvaluatePoliciesProperties withFactName(String factName) {
+        this.factName = factName;
+        return this;
+    }
+
+    /**
+     * Get the fact data.
+     *
+     * @return the factData value
+     */
+    public String factData() {
+        return this.factData;
+    }
+
+    /**
+     * Set the fact data.
+     *
+     * @param factData the factData value to set
+     * @return the EvaluatePoliciesProperties object itself.
+     */
+    public EvaluatePoliciesProperties withFactData(String factData) {
+        this.factData = factData;
+        return this;
+    }
+
+    /**
+     * Get the value offset.
+     *
+     * @return the valueOffset value
+     */
+    public String valueOffset() {
+        return this.valueOffset;
+    }
+
+    /**
+     * Set the value offset.
+     *
+     * @param valueOffset the valueOffset value to set
+     * @return the EvaluatePoliciesProperties object itself.
+     */
+    public EvaluatePoliciesProperties withValueOffset(String valueOffset) {
+        this.valueOffset = valueOffset;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesRequest.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesRequest.java
new file mode 100644
index 000000000000..3d5506e5ea91
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesRequest.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Request body for evaluating a policy set.
+ */
+public class EvaluatePoliciesRequest {
+    /**
+     * Policies to evaluate.
+     */
+    @JsonProperty(value = "policies")
+    private List<EvaluatePoliciesProperties> policies;
+
+    /**
+     * Get policies to evaluate.
+     *
+     * @return the policies value
+     */
+    public List<EvaluatePoliciesProperties> policies() {
+        return this.policies;
+    }
+
+    /**
+     * Set policies to evaluate.
+     *
+     * @param policies the policies value to set
+     * @return the EvaluatePoliciesRequest object itself.
+     */
+    public EvaluatePoliciesRequest withPolicies(List<EvaluatePoliciesProperties> policies) {
+        this.policies = policies;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesResponse.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesResponse.java
new file mode 100644
index 000000000000..6ea262aab960
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/EvaluatePoliciesResponse.java
@@ -0,0 +1,26 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.EvaluatePoliciesResponseInner;
+import java.util.List;
+
+/**
+ * Type representing EvaluatePoliciesResponse.
+ */
+public interface EvaluatePoliciesResponse extends HasInner<EvaluatePoliciesResponseInner>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the results value.
+     */
+    List<PolicySetResult> results();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Formula.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Formula.java
new file mode 100644
index 000000000000..6ebb3fe3dbf8
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Formula.java
@@ -0,0 +1,340 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.FormulaInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import org.joda.time.DateTime;
+import java.util.Map;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.LabVirtualMachineInner;
+
+/**
+ * Type representing Formula.
+ */
+public interface Formula extends HasInner<FormulaInner>, Indexable, Refreshable<Formula>, Updatable<Formula.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the author value.
+     */
+    String author();
+
+    /**
+     * @return the creationDate value.
+     */
+    DateTime creationDate();
+
+    /**
+     * @return the description value.
+     */
+    String description();
+
+    /**
+     * @return the formulaContent value.
+     */
+    LabVirtualMachine formulaContent();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the osType value.
+     */
+    String osType();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * @return the vm value.
+     */
+    FormulaPropertiesFromVm vm();
+
+    /**
+     * The entirety of the Formula definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithLab, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of Formula definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a Formula definition.
+         */
+        interface Blank extends WithLab {
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify Lab.
+         */
+        interface WithLab {
+           /**
+            * Specifies resourceGroupName, labName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @return the next definition stage
+            */
+            WithLocation withExistingLab(String resourceGroupName, String labName);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify Author.
+         */
+        interface WithAuthor {
+            /**
+             * Specifies author.
+             * @param author The author of the formula
+             * @return the next definition stage
+             */
+            WithCreate withAuthor(String author);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify CreationDate.
+         */
+        interface WithCreationDate {
+            /**
+             * Specifies creationDate.
+             * @param creationDate The creation date of the formula
+             * @return the next definition stage
+             */
+            WithCreate withCreationDate(DateTime creationDate);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the formula
+             * @return the next definition stage
+             */
+            WithCreate withDescription(String description);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify FormulaContent.
+         */
+        interface WithFormulaContent {
+            /**
+             * Specifies formulaContent.
+             * @param formulaContent The content of the formula
+             * @return the next definition stage
+             */
+            WithCreate withFormulaContent(LabVirtualMachineInner formulaContent);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify OsType.
+         */
+        interface WithOsType {
+            /**
+             * Specifies osType.
+             * @param osType The OS type of the formula
+             * @return the next definition stage
+             */
+            WithCreate withOsType(String osType);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the formula definition allowing to specify Vm.
+         */
+        interface WithVm {
+            /**
+             * Specifies vm.
+             * @param vm Information about a VM from which a formula is to be created
+             * @return the next definition stage
+             */
+            WithCreate withVm(FormulaPropertiesFromVm vm);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<Formula>, DefinitionStages.WithAuthor, DefinitionStages.WithCreationDate, DefinitionStages.WithDescription, DefinitionStages.WithFormulaContent, DefinitionStages.WithOsType, DefinitionStages.WithProvisioningState, DefinitionStages.WithTags, DefinitionStages.WithVm {
+        }
+    }
+    /**
+     * The template for a Formula update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<Formula>, UpdateStages.WithAuthor, UpdateStages.WithCreationDate, UpdateStages.WithDescription, UpdateStages.WithFormulaContent, UpdateStages.WithOsType, UpdateStages.WithProvisioningState, UpdateStages.WithTags, UpdateStages.WithVm {
+    }
+
+    /**
+     * Grouping of Formula update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the formula update allowing to specify Author.
+         */
+        interface WithAuthor {
+            /**
+             * Specifies author.
+             * @param author The author of the formula
+             * @return the next update stage
+             */
+            Update withAuthor(String author);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify CreationDate.
+         */
+        interface WithCreationDate {
+            /**
+             * Specifies creationDate.
+             * @param creationDate The creation date of the formula
+             * @return the next update stage
+             */
+            Update withCreationDate(DateTime creationDate);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the formula
+             * @return the next update stage
+             */
+            Update withDescription(String description);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify FormulaContent.
+         */
+        interface WithFormulaContent {
+            /**
+             * Specifies formulaContent.
+             * @param formulaContent The content of the formula
+             * @return the next update stage
+             */
+            Update withFormulaContent(LabVirtualMachineInner formulaContent);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify OsType.
+         */
+        interface WithOsType {
+            /**
+             * Specifies osType.
+             * @param osType The OS type of the formula
+             * @return the next update stage
+             */
+            Update withOsType(String osType);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the formula update allowing to specify Vm.
+         */
+        interface WithVm {
+            /**
+             * Specifies vm.
+             * @param vm Information about a VM from which a formula is to be created
+             * @return the next update stage
+             */
+            Update withVm(FormulaPropertiesFromVm vm);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/FormulaPropertiesFromVm.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/FormulaPropertiesFromVm.java
new file mode 100644
index 000000000000..a693acfacc4c
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/FormulaPropertiesFromVm.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Information about a VM from which a formula is to be created.
+ */
+public class FormulaPropertiesFromVm {
+    /**
+     * The identifier of the VM from which a formula is to be created.
+     */
+    @JsonProperty(value = "labVmId")
+    private String labVmId;
+
+    /**
+     * Get the identifier of the VM from which a formula is to be created.
+     *
+     * @return the labVmId value
+     */
+    public String labVmId() {
+        return this.labVmId;
+    }
+
+    /**
+     * Set the identifier of the VM from which a formula is to be created.
+     *
+     * @param labVmId the labVmId value to set
+     * @return the FormulaPropertiesFromVm object itself.
+     */
+    public FormulaPropertiesFromVm withLabVmId(String labVmId) {
+        this.labVmId = labVmId;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Formulas.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Formulas.java
new file mode 100644
index 000000000000..77deecda9760
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Formulas.java
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.FormulasInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing Formulas.
+ */
+public interface Formulas extends SupportsCreating<Formula.DefinitionStages.Blank>, HasInner<FormulasInner> {
+    /**
+     * Get formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Formula> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Formula> listAsync(final String resourceGroupName, final String labName);
+
+    /**
+     * Delete formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImage.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImage.java
new file mode 100644
index 000000000000..ca9df9f9ea85
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImage.java
@@ -0,0 +1,77 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.GalleryImageInner;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import org.joda.time.DateTime;
+import java.util.Map;
+
+/**
+ * Type representing GalleryImage.
+ */
+public interface GalleryImage extends HasInner<GalleryImageInner>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the author value.
+     */
+    String author();
+
+    /**
+     * @return the createdDate value.
+     */
+    DateTime createdDate();
+
+    /**
+     * @return the description value.
+     */
+    String description();
+
+    /**
+     * @return the enabled value.
+     */
+    Boolean enabled();
+
+    /**
+     * @return the icon value.
+     */
+    String icon();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the imageReference value.
+     */
+    GalleryImageReference imageReference();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImageReference.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImageReference.java
new file mode 100644
index 000000000000..2873bb014466
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImageReference.java
@@ -0,0 +1,147 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The reference information for an Azure Marketplace image.
+ */
+public class GalleryImageReference {
+    /**
+     * The offer of the gallery image.
+     */
+    @JsonProperty(value = "offer")
+    private String offer;
+
+    /**
+     * The publisher of the gallery image.
+     */
+    @JsonProperty(value = "publisher")
+    private String publisher;
+
+    /**
+     * The SKU of the gallery image.
+     */
+    @JsonProperty(value = "sku")
+    private String sku;
+
+    /**
+     * The OS type of the gallery image.
+     */
+    @JsonProperty(value = "osType")
+    private String osType;
+
+    /**
+     * The version of the gallery image.
+     */
+    @JsonProperty(value = "version")
+    private String version;
+
+    /**
+     * Get the offer of the gallery image.
+     *
+     * @return the offer value
+     */
+    public String offer() {
+        return this.offer;
+    }
+
+    /**
+     * Set the offer of the gallery image.
+     *
+     * @param offer the offer value to set
+     * @return the GalleryImageReference object itself.
+     */
+    public GalleryImageReference withOffer(String offer) {
+        this.offer = offer;
+        return this;
+    }
+
+    /**
+     * Get the publisher of the gallery image.
+     *
+     * @return the publisher value
+     */
+    public String publisher() {
+        return this.publisher;
+    }
+
+    /**
+     * Set the publisher of the gallery image.
+     *
+     * @param publisher the publisher value to set
+     * @return the GalleryImageReference object itself.
+     */
+    public GalleryImageReference withPublisher(String publisher) {
+        this.publisher = publisher;
+        return this;
+    }
+
+    /**
+     * Get the SKU of the gallery image.
+     *
+     * @return the sku value
+     */
+    public String sku() {
+        return this.sku;
+    }
+
+    /**
+     * Set the SKU of the gallery image.
+     *
+     * @param sku the sku value to set
+     * @return the GalleryImageReference object itself.
+     */
+    public GalleryImageReference withSku(String sku) {
+        this.sku = sku;
+        return this;
+    }
+
+    /**
+     * Get the OS type of the gallery image.
+     *
+     * @return the osType value
+     */
+    public String osType() {
+        return this.osType;
+    }
+
+    /**
+     * Set the OS type of the gallery image.
+     *
+     * @param osType the osType value to set
+     * @return the GalleryImageReference object itself.
+     */
+    public GalleryImageReference withOsType(String osType) {
+        this.osType = osType;
+        return this;
+    }
+
+    /**
+     * Get the version of the gallery image.
+     *
+     * @return the version value
+     */
+    public String version() {
+        return this.version;
+    }
+
+    /**
+     * Set the version of the gallery image.
+     *
+     * @param version the version value to set
+     * @return the GalleryImageReference object itself.
+     */
+    public GalleryImageReference withVersion(String version) {
+        this.version = version;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImages.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImages.java
new file mode 100644
index 000000000000..ba213461ee83
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GalleryImages.java
@@ -0,0 +1,29 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.GalleryImagesInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing GalleryImages.
+ */
+public interface GalleryImages extends HasInner<GalleryImagesInner> {
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<GalleryImage> listAsync(final String resourceGroupName, final String labName);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateArmTemplateRequest.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateArmTemplateRequest.java
new file mode 100644
index 000000000000..710a7db33e02
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateArmTemplateRequest.java
@@ -0,0 +1,96 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Parameters for generating an ARM template for deploying artifacts.
+ */
+public class GenerateArmTemplateRequest {
+    /**
+     * The resource name of the virtual machine.
+     */
+    @JsonProperty(value = "virtualMachineName")
+    private String virtualMachineName;
+
+    /**
+     * The parameters of the ARM template.
+     */
+    @JsonProperty(value = "parameters")
+    private List<ParameterInfo> parameters;
+
+    /**
+     * The location of the virtual machine.
+     */
+    @JsonProperty(value = "location")
+    private String location;
+
+    /**
+     * Get the resource name of the virtual machine.
+     *
+     * @return the virtualMachineName value
+     */
+    public String virtualMachineName() {
+        return this.virtualMachineName;
+    }
+
+    /**
+     * Set the resource name of the virtual machine.
+     *
+     * @param virtualMachineName the virtualMachineName value to set
+     * @return the GenerateArmTemplateRequest object itself.
+     */
+    public GenerateArmTemplateRequest withVirtualMachineName(String virtualMachineName) {
+        this.virtualMachineName = virtualMachineName;
+        return this;
+    }
+
+    /**
+     * Get the parameters of the ARM template.
+     *
+     * @return the parameters value
+     */
+    public List<ParameterInfo> parameters() {
+        return this.parameters;
+    }
+
+    /**
+     * Set the parameters of the ARM template.
+     *
+     * @param parameters the parameters value to set
+     * @return the GenerateArmTemplateRequest object itself.
+     */
+    public GenerateArmTemplateRequest withParameters(List<ParameterInfo> parameters) {
+        this.parameters = parameters;
+        return this;
+    }
+
+    /**
+     * Get the location of the virtual machine.
+     *
+     * @return the location value
+     */
+    public String location() {
+        return this.location;
+    }
+
+    /**
+     * Set the location of the virtual machine.
+     *
+     * @param location the location value to set
+     * @return the GenerateArmTemplateRequest object itself.
+     */
+    public GenerateArmTemplateRequest withLocation(String location) {
+        this.location = location;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateUploadUriParameter.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateUploadUriParameter.java
new file mode 100644
index 000000000000..8aa2c714089c
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateUploadUriParameter.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties for generating an upload URI.
+ */
+public class GenerateUploadUriParameter {
+    /**
+     * The blob name of the upload URI.
+     */
+    @JsonProperty(value = "blobName")
+    private String blobName;
+
+    /**
+     * Get the blob name of the upload URI.
+     *
+     * @return the blobName value
+     */
+    public String blobName() {
+        return this.blobName;
+    }
+
+    /**
+     * Set the blob name of the upload URI.
+     *
+     * @param blobName the blobName value to set
+     * @return the GenerateUploadUriParameter object itself.
+     */
+    public GenerateUploadUriParameter withBlobName(String blobName) {
+        this.blobName = blobName;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateUploadUriResponse.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateUploadUriResponse.java
new file mode 100644
index 000000000000..dea57426d171
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/GenerateUploadUriResponse.java
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.GenerateUploadUriResponseInner;
+
+/**
+ * Type representing GenerateUploadUriResponse.
+ */
+public interface GenerateUploadUriResponse extends HasInner<GenerateUploadUriResponseInner>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the uploadUri value.
+     */
+    String uploadUri();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/HourDetails.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/HourDetails.java
new file mode 100644
index 000000000000..eaa2087cdf90
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/HourDetails.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of an hourly schedule.
+ */
+public class HourDetails {
+    /**
+     * Minutes of the hour the schedule will run.
+     */
+    @JsonProperty(value = "minute")
+    private Integer minute;
+
+    /**
+     * Get minutes of the hour the schedule will run.
+     *
+     * @return the minute value
+     */
+    public Integer minute() {
+        return this.minute;
+    }
+
+    /**
+     * Set minutes of the hour the schedule will run.
+     *
+     * @param minute the minute value to set
+     * @return the HourDetails object itself.
+     */
+    public HourDetails withMinute(Integer minute) {
+        this.minute = minute;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Lab.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Lab.java
new file mode 100644
index 000000000000..e141d313b099
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Lab.java
@@ -0,0 +1,302 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.arm.resources.models.Resource;
+import com.microsoft.azure.arm.resources.models.GroupableResourceCore;
+import com.microsoft.azure.arm.resources.models.HasResourceGroup;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.List;
+import org.joda.time.DateTime;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.LabInner;
+
+/**
+ * Type representing Lab.
+ */
+public interface Lab extends HasInner<LabInner>, Resource, GroupableResourceCore<DevTestLabsManager, LabInner>, HasResourceGroup, Refreshable<Lab>, Updatable<Lab.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the artifactsStorageAccount value.
+     */
+    String artifactsStorageAccount();
+
+    /**
+     * @return the createdDate value.
+     */
+    DateTime createdDate();
+
+    /**
+     * @return the defaultStorageAccount value.
+     */
+    String defaultStorageAccount();
+
+    /**
+     * @return the defaultVirtualNetworkId value.
+     */
+    String defaultVirtualNetworkId();
+
+    /**
+     * @return the labStorageType value.
+     */
+    LabStorageType labStorageType();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the storageAccounts value.
+     */
+    List<String> storageAccounts();
+
+    /**
+     * @return the vaultName value.
+     */
+    String vaultName();
+
+    /**
+     * The entirety of the Lab definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithGroup, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of Lab definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a Lab definition.
+         */
+        interface Blank extends GroupableResourceCore.DefinitionWithRegion<WithGroup> {
+        }
+
+        /**
+         * The stage of the Lab definition allowing to specify the resource group.
+         */
+        interface WithGroup extends GroupableResourceCore.DefinitionStages.WithGroup<WithCreate> {
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify ArtifactsStorageAccount.
+         */
+        interface WithArtifactsStorageAccount {
+            /**
+             * Specifies artifactsStorageAccount.
+             * @param artifactsStorageAccount The artifact storage account of the lab
+             * @return the next definition stage
+             */
+            WithCreate withArtifactsStorageAccount(String artifactsStorageAccount);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify CreatedDate.
+         */
+        interface WithCreatedDate {
+            /**
+             * Specifies createdDate.
+             * @param createdDate The creation date of the lab
+             * @return the next definition stage
+             */
+            WithCreate withCreatedDate(DateTime createdDate);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify DefaultStorageAccount.
+         */
+        interface WithDefaultStorageAccount {
+            /**
+             * Specifies defaultStorageAccount.
+             * @param defaultStorageAccount The lab's default storage account
+             * @return the next definition stage
+             */
+            WithCreate withDefaultStorageAccount(String defaultStorageAccount);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify DefaultVirtualNetworkId.
+         */
+        interface WithDefaultVirtualNetworkId {
+            /**
+             * Specifies defaultVirtualNetworkId.
+             * @param defaultVirtualNetworkId The default virtual network identifier of the lab
+             * @return the next definition stage
+             */
+            WithCreate withDefaultVirtualNetworkId(String defaultVirtualNetworkId);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify LabStorageType.
+         */
+        interface WithLabStorageType {
+            /**
+             * Specifies labStorageType.
+             * @param labStorageType The type of the lab storage. Possible values include: 'Standard', 'Premium'
+             * @return the next definition stage
+             */
+            WithCreate withLabStorageType(LabStorageType labStorageType);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify StorageAccounts.
+         */
+        interface WithStorageAccounts {
+            /**
+             * Specifies storageAccounts.
+             * @param storageAccounts The storage accounts of the lab
+             * @return the next definition stage
+             */
+            WithCreate withStorageAccounts(List<String> storageAccounts);
+        }
+
+        /**
+         * The stage of the lab definition allowing to specify VaultName.
+         */
+        interface WithVaultName {
+            /**
+             * Specifies vaultName.
+             * @param vaultName The name of the key vault of the lab
+             * @return the next definition stage
+             */
+            WithCreate withVaultName(String vaultName);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<Lab>, Resource.DefinitionWithTags<WithCreate>, DefinitionStages.WithArtifactsStorageAccount, DefinitionStages.WithCreatedDate, DefinitionStages.WithDefaultStorageAccount, DefinitionStages.WithDefaultVirtualNetworkId, DefinitionStages.WithLabStorageType, DefinitionStages.WithProvisioningState, DefinitionStages.WithStorageAccounts, DefinitionStages.WithVaultName {
+        }
+    }
+    /**
+     * The template for a Lab update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<Lab>, Resource.UpdateWithTags<Update>, UpdateStages.WithArtifactsStorageAccount, UpdateStages.WithCreatedDate, UpdateStages.WithDefaultStorageAccount, UpdateStages.WithDefaultVirtualNetworkId, UpdateStages.WithLabStorageType, UpdateStages.WithProvisioningState, UpdateStages.WithStorageAccounts, UpdateStages.WithVaultName {
+    }
+
+    /**
+     * Grouping of Lab update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the lab update allowing to specify ArtifactsStorageAccount.
+         */
+        interface WithArtifactsStorageAccount {
+            /**
+             * Specifies artifactsStorageAccount.
+             * @param artifactsStorageAccount The artifact storage account of the lab
+             * @return the next update stage
+             */
+            Update withArtifactsStorageAccount(String artifactsStorageAccount);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify CreatedDate.
+         */
+        interface WithCreatedDate {
+            /**
+             * Specifies createdDate.
+             * @param createdDate The creation date of the lab
+             * @return the next update stage
+             */
+            Update withCreatedDate(DateTime createdDate);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify DefaultStorageAccount.
+         */
+        interface WithDefaultStorageAccount {
+            /**
+             * Specifies defaultStorageAccount.
+             * @param defaultStorageAccount The lab's default storage account
+             * @return the next update stage
+             */
+            Update withDefaultStorageAccount(String defaultStorageAccount);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify DefaultVirtualNetworkId.
+         */
+        interface WithDefaultVirtualNetworkId {
+            /**
+             * Specifies defaultVirtualNetworkId.
+             * @param defaultVirtualNetworkId The default virtual network identifier of the lab
+             * @return the next update stage
+             */
+            Update withDefaultVirtualNetworkId(String defaultVirtualNetworkId);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify LabStorageType.
+         */
+        interface WithLabStorageType {
+            /**
+             * Specifies labStorageType.
+             * @param labStorageType The type of the lab storage. Possible values include: 'Standard', 'Premium'
+             * @return the next update stage
+             */
+            Update withLabStorageType(LabStorageType labStorageType);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify StorageAccounts.
+         */
+        interface WithStorageAccounts {
+            /**
+             * Specifies storageAccounts.
+             * @param storageAccounts The storage accounts of the lab
+             * @return the next update stage
+             */
+            Update withStorageAccounts(List<String> storageAccounts);
+        }
+
+        /**
+         * The stage of the lab update allowing to specify VaultName.
+         */
+        interface WithVaultName {
+            /**
+             * Specifies vaultName.
+             * @param vaultName The name of the key vault of the lab
+             * @return the next update stage
+             */
+            Update withVaultName(String vaultName);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabStorageType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabStorageType.java
new file mode 100644
index 000000000000..c03ed5b9a9b9
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabStorageType.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for LabStorageType.
+ */
+public final class LabStorageType extends ExpandableStringEnum<LabStorageType> {
+    /** Static value Standard for LabStorageType. */
+    public static final LabStorageType STANDARD = fromString("Standard");
+
+    /** Static value Premium for LabStorageType. */
+    public static final LabStorageType PREMIUM = fromString("Premium");
+
+    /**
+     * Creates or finds a LabStorageType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding LabStorageType
+     */
+    @JsonCreator
+    public static LabStorageType fromString(String name) {
+        return fromString(name, LabStorageType.class);
+    }
+
+    /**
+     * @return known LabStorageType values
+     */
+    public static Collection<LabStorageType> values() {
+        return values(LabStorageType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabVhd.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabVhd.java
new file mode 100644
index 000000000000..d60a67f89077
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabVhd.java
@@ -0,0 +1,25 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.LabVhdInner;
+
+/**
+ * Type representing LabVhd.
+ */
+public interface LabVhd extends HasInner<LabVhdInner>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the id value.
+     */
+    String id();
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabVirtualMachine.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabVirtualMachine.java
new file mode 100644
index 000000000000..299b3aa2a0f8
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LabVirtualMachine.java
@@ -0,0 +1,716 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.LabVirtualMachineInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Type representing LabVirtualMachine.
+ */
+public interface LabVirtualMachine extends HasInner<LabVirtualMachineInner>, Indexable, Refreshable<LabVirtualMachine>, Updatable<LabVirtualMachine.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the artifactDeploymentStatus value.
+     */
+    ArtifactDeploymentStatusProperties artifactDeploymentStatus();
+
+    /**
+     * @return the artifacts value.
+     */
+    List<ArtifactInstallProperties> artifacts();
+
+    /**
+     * @return the computeId value.
+     */
+    String computeId();
+
+    /**
+     * @return the createdByUser value.
+     */
+    String createdByUser();
+
+    /**
+     * @return the createdByUserId value.
+     */
+    String createdByUserId();
+
+    /**
+     * @return the customImageId value.
+     */
+    String customImageId();
+
+    /**
+     * @return the disallowPublicIpAddress value.
+     */
+    Boolean disallowPublicIpAddress();
+
+    /**
+     * @return the fqdn value.
+     */
+    String fqdn();
+
+    /**
+     * @return the galleryImageReference value.
+     */
+    GalleryImageReference galleryImageReference();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the isAuthenticationWithSshKey value.
+     */
+    Boolean isAuthenticationWithSshKey();
+
+    /**
+     * @return the labSubnetName value.
+     */
+    String labSubnetName();
+
+    /**
+     * @return the labVirtualNetworkId value.
+     */
+    String labVirtualNetworkId();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the notes value.
+     */
+    String notes();
+
+    /**
+     * @return the osType value.
+     */
+    String osType();
+
+    /**
+     * @return the ownerObjectId value.
+     */
+    String ownerObjectId();
+
+    /**
+     * @return the password value.
+     */
+    String password();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the size value.
+     */
+    String size();
+
+    /**
+     * @return the sshKey value.
+     */
+    String sshKey();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * @return the userName value.
+     */
+    String userName();
+
+    /**
+     * The entirety of the LabVirtualMachine definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithLab, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of LabVirtualMachine definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a LabVirtualMachine definition.
+         */
+        interface Blank extends WithLab {
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Lab.
+         */
+        interface WithLab {
+           /**
+            * Specifies resourceGroupName, labName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @return the next definition stage
+            */
+            WithLocation withExistingLab(String resourceGroupName, String labName);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify ArtifactDeploymentStatus.
+         */
+        interface WithArtifactDeploymentStatus {
+            /**
+             * Specifies artifactDeploymentStatus.
+             * @param artifactDeploymentStatus The artifact deployment status for the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withArtifactDeploymentStatus(ArtifactDeploymentStatusProperties artifactDeploymentStatus);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Artifacts.
+         */
+        interface WithArtifacts {
+            /**
+             * Specifies artifacts.
+             * @param artifacts The artifacts to be installed on the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withArtifacts(List<ArtifactInstallProperties> artifacts);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify ComputeId.
+         */
+        interface WithComputeId {
+            /**
+             * Specifies computeId.
+             * @param computeId The resource identifier (Microsoft.Compute) of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withComputeId(String computeId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify CreatedByUser.
+         */
+        interface WithCreatedByUser {
+            /**
+             * Specifies createdByUser.
+             * @param createdByUser The email address of creator of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withCreatedByUser(String createdByUser);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify CreatedByUserId.
+         */
+        interface WithCreatedByUserId {
+            /**
+             * Specifies createdByUserId.
+             * @param createdByUserId The object identifier of the creator of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withCreatedByUserId(String createdByUserId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify CustomImageId.
+         */
+        interface WithCustomImageId {
+            /**
+             * Specifies customImageId.
+             * @param customImageId The custom image identifier of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withCustomImageId(String customImageId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify DisallowPublicIpAddress.
+         */
+        interface WithDisallowPublicIpAddress {
+            /**
+             * Specifies disallowPublicIpAddress.
+             * @param disallowPublicIpAddress Indicates whether the virtual machine is to be created without a public IP address
+             * @return the next definition stage
+             */
+            WithCreate withDisallowPublicIpAddress(Boolean disallowPublicIpAddress);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Fqdn.
+         */
+        interface WithFqdn {
+            /**
+             * Specifies fqdn.
+             * @param fqdn The fully-qualified domain name of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withFqdn(String fqdn);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify GalleryImageReference.
+         */
+        interface WithGalleryImageReference {
+            /**
+             * Specifies galleryImageReference.
+             * @param galleryImageReference The Microsoft Azure Marketplace image reference of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withGalleryImageReference(GalleryImageReference galleryImageReference);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify IsAuthenticationWithSshKey.
+         */
+        interface WithIsAuthenticationWithSshKey {
+            /**
+             * Specifies isAuthenticationWithSshKey.
+             * @param isAuthenticationWithSshKey A value indicating whether this virtual machine uses an SSH key for authentication
+             * @return the next definition stage
+             */
+            WithCreate withIsAuthenticationWithSshKey(Boolean isAuthenticationWithSshKey);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify LabSubnetName.
+         */
+        interface WithLabSubnetName {
+            /**
+             * Specifies labSubnetName.
+             * @param labSubnetName The lab subnet name of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withLabSubnetName(String labSubnetName);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify LabVirtualNetworkId.
+         */
+        interface WithLabVirtualNetworkId {
+            /**
+             * Specifies labVirtualNetworkId.
+             * @param labVirtualNetworkId The lab virtual network identifier of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withLabVirtualNetworkId(String labVirtualNetworkId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Notes.
+         */
+        interface WithNotes {
+            /**
+             * Specifies notes.
+             * @param notes The notes of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withNotes(String notes);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify OsType.
+         */
+        interface WithOsType {
+            /**
+             * Specifies osType.
+             * @param osType The OS type of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withOsType(String osType);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify OwnerObjectId.
+         */
+        interface WithOwnerObjectId {
+            /**
+             * Specifies ownerObjectId.
+             * @param ownerObjectId The object identifier of the owner of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withOwnerObjectId(String ownerObjectId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Password.
+         */
+        interface WithPassword {
+            /**
+             * Specifies password.
+             * @param password The password of the virtual machine administrator
+             * @return the next definition stage
+             */
+            WithCreate withPassword(String password);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Size.
+         */
+        interface WithSize {
+            /**
+             * Specifies size.
+             * @param size The size of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withSize(String size);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify SshKey.
+         */
+        interface WithSshKey {
+            /**
+             * Specifies sshKey.
+             * @param sshKey The SSH key of the virtual machine administrator
+             * @return the next definition stage
+             */
+            WithCreate withSshKey(String sshKey);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the labvirtualmachine definition allowing to specify UserName.
+         */
+        interface WithUserName {
+            /**
+             * Specifies userName.
+             * @param userName The user name of the virtual machine
+             * @return the next definition stage
+             */
+            WithCreate withUserName(String userName);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<LabVirtualMachine>, DefinitionStages.WithArtifactDeploymentStatus, DefinitionStages.WithArtifacts, DefinitionStages.WithComputeId, DefinitionStages.WithCreatedByUser, DefinitionStages.WithCreatedByUserId, DefinitionStages.WithCustomImageId, DefinitionStages.WithDisallowPublicIpAddress, DefinitionStages.WithFqdn, DefinitionStages.WithGalleryImageReference, DefinitionStages.WithIsAuthenticationWithSshKey, DefinitionStages.WithLabSubnetName, DefinitionStages.WithLabVirtualNetworkId, DefinitionStages.WithNotes, DefinitionStages.WithOsType, DefinitionStages.WithOwnerObjectId, DefinitionStages.WithPassword, DefinitionStages.WithProvisioningState, DefinitionStages.WithSize, DefinitionStages.WithSshKey, DefinitionStages.WithTags, DefinitionStages.WithUserName {
+        }
+    }
+    /**
+     * The template for a LabVirtualMachine update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<LabVirtualMachine>, UpdateStages.WithArtifactDeploymentStatus, UpdateStages.WithArtifacts, UpdateStages.WithComputeId, UpdateStages.WithCreatedByUser, UpdateStages.WithCreatedByUserId, UpdateStages.WithCustomImageId, UpdateStages.WithDisallowPublicIpAddress, UpdateStages.WithFqdn, UpdateStages.WithGalleryImageReference, UpdateStages.WithIsAuthenticationWithSshKey, UpdateStages.WithLabSubnetName, UpdateStages.WithLabVirtualNetworkId, UpdateStages.WithNotes, UpdateStages.WithOsType, UpdateStages.WithOwnerObjectId, UpdateStages.WithPassword, UpdateStages.WithProvisioningState, UpdateStages.WithSize, UpdateStages.WithSshKey, UpdateStages.WithTags, UpdateStages.WithUserName {
+    }
+
+    /**
+     * Grouping of LabVirtualMachine update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the labvirtualmachine update allowing to specify ArtifactDeploymentStatus.
+         */
+        interface WithArtifactDeploymentStatus {
+            /**
+             * Specifies artifactDeploymentStatus.
+             * @param artifactDeploymentStatus The artifact deployment status for the virtual machine
+             * @return the next update stage
+             */
+            Update withArtifactDeploymentStatus(ArtifactDeploymentStatusProperties artifactDeploymentStatus);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify Artifacts.
+         */
+        interface WithArtifacts {
+            /**
+             * Specifies artifacts.
+             * @param artifacts The artifacts to be installed on the virtual machine
+             * @return the next update stage
+             */
+            Update withArtifacts(List<ArtifactInstallProperties> artifacts);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify ComputeId.
+         */
+        interface WithComputeId {
+            /**
+             * Specifies computeId.
+             * @param computeId The resource identifier (Microsoft.Compute) of the virtual machine
+             * @return the next update stage
+             */
+            Update withComputeId(String computeId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify CreatedByUser.
+         */
+        interface WithCreatedByUser {
+            /**
+             * Specifies createdByUser.
+             * @param createdByUser The email address of creator of the virtual machine
+             * @return the next update stage
+             */
+            Update withCreatedByUser(String createdByUser);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify CreatedByUserId.
+         */
+        interface WithCreatedByUserId {
+            /**
+             * Specifies createdByUserId.
+             * @param createdByUserId The object identifier of the creator of the virtual machine
+             * @return the next update stage
+             */
+            Update withCreatedByUserId(String createdByUserId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify CustomImageId.
+         */
+        interface WithCustomImageId {
+            /**
+             * Specifies customImageId.
+             * @param customImageId The custom image identifier of the virtual machine
+             * @return the next update stage
+             */
+            Update withCustomImageId(String customImageId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify DisallowPublicIpAddress.
+         */
+        interface WithDisallowPublicIpAddress {
+            /**
+             * Specifies disallowPublicIpAddress.
+             * @param disallowPublicIpAddress Indicates whether the virtual machine is to be created without a public IP address
+             * @return the next update stage
+             */
+            Update withDisallowPublicIpAddress(Boolean disallowPublicIpAddress);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify Fqdn.
+         */
+        interface WithFqdn {
+            /**
+             * Specifies fqdn.
+             * @param fqdn The fully-qualified domain name of the virtual machine
+             * @return the next update stage
+             */
+            Update withFqdn(String fqdn);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify GalleryImageReference.
+         */
+        interface WithGalleryImageReference {
+            /**
+             * Specifies galleryImageReference.
+             * @param galleryImageReference The Microsoft Azure Marketplace image reference of the virtual machine
+             * @return the next update stage
+             */
+            Update withGalleryImageReference(GalleryImageReference galleryImageReference);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify IsAuthenticationWithSshKey.
+         */
+        interface WithIsAuthenticationWithSshKey {
+            /**
+             * Specifies isAuthenticationWithSshKey.
+             * @param isAuthenticationWithSshKey A value indicating whether this virtual machine uses an SSH key for authentication
+             * @return the next update stage
+             */
+            Update withIsAuthenticationWithSshKey(Boolean isAuthenticationWithSshKey);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify LabSubnetName.
+         */
+        interface WithLabSubnetName {
+            /**
+             * Specifies labSubnetName.
+             * @param labSubnetName The lab subnet name of the virtual machine
+             * @return the next update stage
+             */
+            Update withLabSubnetName(String labSubnetName);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify LabVirtualNetworkId.
+         */
+        interface WithLabVirtualNetworkId {
+            /**
+             * Specifies labVirtualNetworkId.
+             * @param labVirtualNetworkId The lab virtual network identifier of the virtual machine
+             * @return the next update stage
+             */
+            Update withLabVirtualNetworkId(String labVirtualNetworkId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify Notes.
+         */
+        interface WithNotes {
+            /**
+             * Specifies notes.
+             * @param notes The notes of the virtual machine
+             * @return the next update stage
+             */
+            Update withNotes(String notes);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify OsType.
+         */
+        interface WithOsType {
+            /**
+             * Specifies osType.
+             * @param osType The OS type of the virtual machine
+             * @return the next update stage
+             */
+            Update withOsType(String osType);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify OwnerObjectId.
+         */
+        interface WithOwnerObjectId {
+            /**
+             * Specifies ownerObjectId.
+             * @param ownerObjectId The object identifier of the owner of the virtual machine
+             * @return the next update stage
+             */
+            Update withOwnerObjectId(String ownerObjectId);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify Password.
+         */
+        interface WithPassword {
+            /**
+             * Specifies password.
+             * @param password The password of the virtual machine administrator
+             * @return the next update stage
+             */
+            Update withPassword(String password);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify Size.
+         */
+        interface WithSize {
+            /**
+             * Specifies size.
+             * @param size The size of the virtual machine
+             * @return the next update stage
+             */
+            Update withSize(String size);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify SshKey.
+         */
+        interface WithSshKey {
+            /**
+             * Specifies sshKey.
+             * @param sshKey The SSH key of the virtual machine administrator
+             * @return the next update stage
+             */
+            Update withSshKey(String sshKey);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the labvirtualmachine update allowing to specify UserName.
+         */
+        interface WithUserName {
+            /**
+             * Specifies userName.
+             * @param userName The user name of the virtual machine
+             * @return the next update stage
+             */
+            Update withUserName(String userName);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Labs.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Labs.java
new file mode 100644
index 000000000000..75fe082a4480
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Labs.java
@@ -0,0 +1,58 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import com.microsoft.azure.arm.resources.collection.SupportsDeletingByResourceGroup;
+import com.microsoft.azure.arm.resources.collection.SupportsBatchDeletion;
+import com.microsoft.azure.arm.resources.collection.SupportsGettingByResourceGroup;
+import rx.Observable;
+import com.microsoft.azure.arm.resources.collection.SupportsListingByResourceGroup;
+import com.microsoft.azure.arm.collection.SupportsListing;
+import rx.Completable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.LabVirtualMachineInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.LabsInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing Labs.
+ */
+public interface Labs extends SupportsCreating<Lab.DefinitionStages.Blank>, SupportsDeletingByResourceGroup, SupportsBatchDeletion, SupportsGettingByResourceGroup<Lab>, SupportsListingByResourceGroup<Lab>, SupportsListing<Lab>, HasInner<LabsInner> {
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable createEnvironmentAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine);
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<GenerateUploadUriResponse> generateUploadUriAsync(String resourceGroupName, String name);
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<LabVhd> listVhdsAsync(final String resourceGroupName, final String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LinuxOsInfo.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LinuxOsInfo.java
new file mode 100644
index 000000000000..7e33de964d09
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LinuxOsInfo.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Information about a Linux OS.
+ */
+public class LinuxOsInfo {
+    /**
+     * The state of the Linux OS. Possible values include: 'NonDeprovisioned',
+     * 'DeprovisionRequested', 'DeprovisionApplied'.
+     */
+    @JsonProperty(value = "linuxOsState")
+    private LinuxOsState linuxOsState;
+
+    /**
+     * Get the state of the Linux OS. Possible values include: 'NonDeprovisioned', 'DeprovisionRequested', 'DeprovisionApplied'.
+     *
+     * @return the linuxOsState value
+     */
+    public LinuxOsState linuxOsState() {
+        return this.linuxOsState;
+    }
+
+    /**
+     * Set the state of the Linux OS. Possible values include: 'NonDeprovisioned', 'DeprovisionRequested', 'DeprovisionApplied'.
+     *
+     * @param linuxOsState the linuxOsState value to set
+     * @return the LinuxOsInfo object itself.
+     */
+    public LinuxOsInfo withLinuxOsState(LinuxOsState linuxOsState) {
+        this.linuxOsState = linuxOsState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LinuxOsState.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LinuxOsState.java
new file mode 100644
index 000000000000..193365c08800
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/LinuxOsState.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for LinuxOsState.
+ */
+public final class LinuxOsState extends ExpandableStringEnum<LinuxOsState> {
+    /** Static value NonDeprovisioned for LinuxOsState. */
+    public static final LinuxOsState NON_DEPROVISIONED = fromString("NonDeprovisioned");
+
+    /** Static value DeprovisionRequested for LinuxOsState. */
+    public static final LinuxOsState DEPROVISION_REQUESTED = fromString("DeprovisionRequested");
+
+    /** Static value DeprovisionApplied for LinuxOsState. */
+    public static final LinuxOsState DEPROVISION_APPLIED = fromString("DeprovisionApplied");
+
+    /**
+     * Creates or finds a LinuxOsState from its string representation.
+     * @param name a name to look for
+     * @return the corresponding LinuxOsState
+     */
+    @JsonCreator
+    public static LinuxOsState fromString(String name) {
+        return fromString(name, LinuxOsState.class);
+    }
+
+    /**
+     * @return known LinuxOsState values
+     */
+    public static Collection<LinuxOsState> values() {
+        return values(LinuxOsState.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ParameterInfo.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ParameterInfo.java
new file mode 100644
index 000000000000..4ef2b0432b27
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/ParameterInfo.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The ParameterInfo model.
+ */
+public class ParameterInfo {
+    /**
+     * The name property.
+     */
+    @JsonProperty(value = "name")
+    private String name;
+
+    /**
+     * The value property.
+     */
+    @JsonProperty(value = "value")
+    private String value;
+
+    /**
+     * Get the name value.
+     *
+     * @return the name value
+     */
+    public String name() {
+        return this.name;
+    }
+
+    /**
+     * Set the name value.
+     *
+     * @param name the name value to set
+     * @return the ParameterInfo object itself.
+     */
+    public ParameterInfo withName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get the value value.
+     *
+     * @return the value value
+     */
+    public String value() {
+        return this.value;
+    }
+
+    /**
+     * Set the value value.
+     *
+     * @param value the value value to set
+     * @return the ParameterInfo object itself.
+     */
+    public ParameterInfo withValue(String value) {
+        this.value = value;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Policy.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Policy.java
new file mode 100644
index 000000000000..2c27587b89bb
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Policy.java
@@ -0,0 +1,339 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.PolicyInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.Map;
+
+/**
+ * Type representing Policy.
+ */
+public interface Policy extends HasInner<PolicyInner>, Indexable, Refreshable<Policy>, Updatable<Policy.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the description value.
+     */
+    String description();
+
+    /**
+     * @return the evaluatorType value.
+     */
+    PolicyEvaluatorType evaluatorType();
+
+    /**
+     * @return the factData value.
+     */
+    String factData();
+
+    /**
+     * @return the factName value.
+     */
+    PolicyFactName factName();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the status value.
+     */
+    PolicyStatus status();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the threshold value.
+     */
+    String threshold();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * The entirety of the Policy definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithPolicyset, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of Policy definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a Policy definition.
+         */
+        interface Blank extends WithPolicyset {
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify Policyset.
+         */
+        interface WithPolicyset {
+           /**
+            * Specifies resourceGroupName, labName, policySetName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @param policySetName The name of the policy set
+            * @return the next definition stage
+            */
+            WithLocation withExistingPolicyset(String resourceGroupName, String labName, String policySetName);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the policy
+             * @return the next definition stage
+             */
+            WithCreate withDescription(String description);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify EvaluatorType.
+         */
+        interface WithEvaluatorType {
+            /**
+             * Specifies evaluatorType.
+             * @param evaluatorType The evaluator type of the policy. Possible values include: 'AllowedValuesPolicy', 'MaxValuePolicy'
+             * @return the next definition stage
+             */
+            WithCreate withEvaluatorType(PolicyEvaluatorType evaluatorType);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify FactData.
+         */
+        interface WithFactData {
+            /**
+             * Specifies factData.
+             * @param factData The fact data of the policy
+             * @return the next definition stage
+             */
+            WithCreate withFactData(String factData);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify FactName.
+         */
+        interface WithFactName {
+            /**
+             * Specifies factName.
+             * @param factName The fact name of the policy. Possible values include: 'UserOwnedLabVmCount', 'LabVmCount', 'LabVmSize', 'GalleryImage', 'UserOwnedLabVmCountInSubnet'
+             * @return the next definition stage
+             */
+            WithCreate withFactName(PolicyFactName factName);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify Status.
+         */
+        interface WithStatus {
+            /**
+             * Specifies status.
+             * @param status The status of the policy. Possible values include: 'Enabled', 'Disabled'
+             * @return the next definition stage
+             */
+            WithCreate withStatus(PolicyStatus status);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the policy definition allowing to specify Threshold.
+         */
+        interface WithThreshold {
+            /**
+             * Specifies threshold.
+             * @param threshold The threshold of the policy
+             * @return the next definition stage
+             */
+            WithCreate withThreshold(String threshold);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<Policy>, DefinitionStages.WithDescription, DefinitionStages.WithEvaluatorType, DefinitionStages.WithFactData, DefinitionStages.WithFactName, DefinitionStages.WithProvisioningState, DefinitionStages.WithStatus, DefinitionStages.WithTags, DefinitionStages.WithThreshold {
+        }
+    }
+    /**
+     * The template for a Policy update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<Policy>, UpdateStages.WithDescription, UpdateStages.WithEvaluatorType, UpdateStages.WithFactData, UpdateStages.WithFactName, UpdateStages.WithProvisioningState, UpdateStages.WithStatus, UpdateStages.WithTags, UpdateStages.WithThreshold {
+    }
+
+    /**
+     * Grouping of Policy update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the policy update allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the policy
+             * @return the next update stage
+             */
+            Update withDescription(String description);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify EvaluatorType.
+         */
+        interface WithEvaluatorType {
+            /**
+             * Specifies evaluatorType.
+             * @param evaluatorType The evaluator type of the policy. Possible values include: 'AllowedValuesPolicy', 'MaxValuePolicy'
+             * @return the next update stage
+             */
+            Update withEvaluatorType(PolicyEvaluatorType evaluatorType);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify FactData.
+         */
+        interface WithFactData {
+            /**
+             * Specifies factData.
+             * @param factData The fact data of the policy
+             * @return the next update stage
+             */
+            Update withFactData(String factData);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify FactName.
+         */
+        interface WithFactName {
+            /**
+             * Specifies factName.
+             * @param factName The fact name of the policy. Possible values include: 'UserOwnedLabVmCount', 'LabVmCount', 'LabVmSize', 'GalleryImage', 'UserOwnedLabVmCountInSubnet'
+             * @return the next update stage
+             */
+            Update withFactName(PolicyFactName factName);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify Status.
+         */
+        interface WithStatus {
+            /**
+             * Specifies status.
+             * @param status The status of the policy. Possible values include: 'Enabled', 'Disabled'
+             * @return the next update stage
+             */
+            Update withStatus(PolicyStatus status);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the policy update allowing to specify Threshold.
+         */
+        interface WithThreshold {
+            /**
+             * Specifies threshold.
+             * @param threshold The threshold of the policy
+             * @return the next update stage
+             */
+            Update withThreshold(String threshold);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyEvaluatorType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyEvaluatorType.java
new file mode 100644
index 000000000000..26bcce4ec481
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyEvaluatorType.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for PolicyEvaluatorType.
+ */
+public final class PolicyEvaluatorType extends ExpandableStringEnum<PolicyEvaluatorType> {
+    /** Static value AllowedValuesPolicy for PolicyEvaluatorType. */
+    public static final PolicyEvaluatorType ALLOWED_VALUES_POLICY = fromString("AllowedValuesPolicy");
+
+    /** Static value MaxValuePolicy for PolicyEvaluatorType. */
+    public static final PolicyEvaluatorType MAX_VALUE_POLICY = fromString("MaxValuePolicy");
+
+    /**
+     * Creates or finds a PolicyEvaluatorType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding PolicyEvaluatorType
+     */
+    @JsonCreator
+    public static PolicyEvaluatorType fromString(String name) {
+        return fromString(name, PolicyEvaluatorType.class);
+    }
+
+    /**
+     * @return known PolicyEvaluatorType values
+     */
+    public static Collection<PolicyEvaluatorType> values() {
+        return values(PolicyEvaluatorType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyFactName.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyFactName.java
new file mode 100644
index 000000000000..68a65ca8ab0b
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyFactName.java
@@ -0,0 +1,50 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for PolicyFactName.
+ */
+public final class PolicyFactName extends ExpandableStringEnum<PolicyFactName> {
+    /** Static value UserOwnedLabVmCount for PolicyFactName. */
+    public static final PolicyFactName USER_OWNED_LAB_VM_COUNT = fromString("UserOwnedLabVmCount");
+
+    /** Static value LabVmCount for PolicyFactName. */
+    public static final PolicyFactName LAB_VM_COUNT = fromString("LabVmCount");
+
+    /** Static value LabVmSize for PolicyFactName. */
+    public static final PolicyFactName LAB_VM_SIZE = fromString("LabVmSize");
+
+    /** Static value GalleryImage for PolicyFactName. */
+    public static final PolicyFactName GALLERY_IMAGE = fromString("GalleryImage");
+
+    /** Static value UserOwnedLabVmCountInSubnet for PolicyFactName. */
+    public static final PolicyFactName USER_OWNED_LAB_VM_COUNT_IN_SUBNET = fromString("UserOwnedLabVmCountInSubnet");
+
+    /**
+     * Creates or finds a PolicyFactName from its string representation.
+     * @param name a name to look for
+     * @return the corresponding PolicyFactName
+     */
+    @JsonCreator
+    public static PolicyFactName fromString(String name) {
+        return fromString(name, PolicyFactName.class);
+    }
+
+    /**
+     * @return known PolicyFactName values
+     */
+    public static Collection<PolicyFactName> values() {
+        return values(PolicyFactName.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicySetResult.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicySetResult.java
new file mode 100644
index 000000000000..1c287027762e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicySetResult.java
@@ -0,0 +1,71 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Result of a policy set evaluation.
+ */
+public class PolicySetResult {
+    /**
+     * A value indicating whether this policy set evaluation has discovered
+     * violations.
+     */
+    @JsonProperty(value = "hasError")
+    private Boolean hasError;
+
+    /**
+     * The list of policy violations.
+     */
+    @JsonProperty(value = "policyViolations")
+    private List<PolicyViolation> policyViolations;
+
+    /**
+     * Get a value indicating whether this policy set evaluation has discovered violations.
+     *
+     * @return the hasError value
+     */
+    public Boolean hasError() {
+        return this.hasError;
+    }
+
+    /**
+     * Set a value indicating whether this policy set evaluation has discovered violations.
+     *
+     * @param hasError the hasError value to set
+     * @return the PolicySetResult object itself.
+     */
+    public PolicySetResult withHasError(Boolean hasError) {
+        this.hasError = hasError;
+        return this;
+    }
+
+    /**
+     * Get the list of policy violations.
+     *
+     * @return the policyViolations value
+     */
+    public List<PolicyViolation> policyViolations() {
+        return this.policyViolations;
+    }
+
+    /**
+     * Set the list of policy violations.
+     *
+     * @param policyViolations the policyViolations value to set
+     * @return the PolicySetResult object itself.
+     */
+    public PolicySetResult withPolicyViolations(List<PolicyViolation> policyViolations) {
+        this.policyViolations = policyViolations;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicySets.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicySets.java
new file mode 100644
index 000000000000..875ee8a7b022
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicySets.java
@@ -0,0 +1,30 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.PolicySetsInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing PolicySets.
+ */
+public interface PolicySets extends HasInner<PolicySetsInner> {
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<EvaluatePoliciesResponse> evaluatePoliciesAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyStatus.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyStatus.java
new file mode 100644
index 000000000000..4d0558862c1a
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyStatus.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for PolicyStatus.
+ */
+public final class PolicyStatus extends ExpandableStringEnum<PolicyStatus> {
+    /** Static value Enabled for PolicyStatus. */
+    public static final PolicyStatus ENABLED = fromString("Enabled");
+
+    /** Static value Disabled for PolicyStatus. */
+    public static final PolicyStatus DISABLED = fromString("Disabled");
+
+    /**
+     * Creates or finds a PolicyStatus from its string representation.
+     * @param name a name to look for
+     * @return the corresponding PolicyStatus
+     */
+    @JsonCreator
+    public static PolicyStatus fromString(String name) {
+        return fromString(name, PolicyStatus.class);
+    }
+
+    /**
+     * @return known PolicyStatus values
+     */
+    public static Collection<PolicyStatus> values() {
+        return values(PolicyStatus.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyViolation.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyViolation.java
new file mode 100644
index 000000000000..9cb66489f606
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/PolicyViolation.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Policy violation.
+ */
+public class PolicyViolation {
+    /**
+     * The code of the policy violation.
+     */
+    @JsonProperty(value = "code")
+    private String code;
+
+    /**
+     * The message of the policy violation.
+     */
+    @JsonProperty(value = "message")
+    private String message;
+
+    /**
+     * Get the code of the policy violation.
+     *
+     * @return the code value
+     */
+    public String code() {
+        return this.code;
+    }
+
+    /**
+     * Set the code of the policy violation.
+     *
+     * @param code the code value to set
+     * @return the PolicyViolation object itself.
+     */
+    public PolicyViolation withCode(String code) {
+        this.code = code;
+        return this;
+    }
+
+    /**
+     * Get the message of the policy violation.
+     *
+     * @return the message value
+     */
+    public String message() {
+        return this.message;
+    }
+
+    /**
+     * Set the message of the policy violation.
+     *
+     * @param message the message value to set
+     * @return the PolicyViolation object itself.
+     */
+    public PolicyViolation withMessage(String message) {
+        this.message = message;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Policys.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Policys.java
new file mode 100644
index 000000000000..8ef6911ebdb1
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Policys.java
@@ -0,0 +1,56 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.PolicysInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing Policys.
+ */
+public interface Policys extends SupportsCreating<Policy.DefinitionStages.Blank>, HasInner<PolicysInner> {
+    /**
+     * Get policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Policy> getResourceAsync(String resourceGroupName, String labName, String policySetName, String name);
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Policy> listAsync(final String resourceGroupName, final String labName, final String policySetName);
+
+    /**
+     * Delete policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String policySetName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Schedule.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Schedule.java
new file mode 100644
index 000000000000..11ec5c0002bb
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Schedule.java
@@ -0,0 +1,338 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.ScheduleInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.Map;
+
+/**
+ * Type representing Schedule.
+ */
+public interface Schedule extends HasInner<ScheduleInner>, Indexable, Refreshable<Schedule>, Updatable<Schedule.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the dailyRecurrence value.
+     */
+    DayDetails dailyRecurrence();
+
+    /**
+     * @return the hourlyRecurrence value.
+     */
+    HourDetails hourlyRecurrence();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the status value.
+     */
+    EnableStatus status();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the taskType value.
+     */
+    TaskType taskType();
+
+    /**
+     * @return the timeZoneId value.
+     */
+    String timeZoneId();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * @return the weeklyRecurrence value.
+     */
+    WeekDetails weeklyRecurrence();
+
+    /**
+     * The entirety of the Schedule definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithLab, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of Schedule definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a Schedule definition.
+         */
+        interface Blank extends WithLab {
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify Lab.
+         */
+        interface WithLab {
+           /**
+            * Specifies resourceGroupName, labName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @return the next definition stage
+            */
+            WithLocation withExistingLab(String resourceGroupName, String labName);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify DailyRecurrence.
+         */
+        interface WithDailyRecurrence {
+            /**
+             * Specifies dailyRecurrence.
+             * @param dailyRecurrence The daily recurrence of the schedule
+             * @return the next definition stage
+             */
+            WithCreate withDailyRecurrence(DayDetails dailyRecurrence);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify HourlyRecurrence.
+         */
+        interface WithHourlyRecurrence {
+            /**
+             * Specifies hourlyRecurrence.
+             * @param hourlyRecurrence The hourly recurrence of the schedule
+             * @return the next definition stage
+             */
+            WithCreate withHourlyRecurrence(HourDetails hourlyRecurrence);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify Status.
+         */
+        interface WithStatus {
+            /**
+             * Specifies status.
+             * @param status The status of the schedule. Possible values include: 'Enabled', 'Disabled'
+             * @return the next definition stage
+             */
+            WithCreate withStatus(EnableStatus status);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify TaskType.
+         */
+        interface WithTaskType {
+            /**
+             * Specifies taskType.
+             * @param taskType The task type of the schedule. Possible values include: 'LabVmsShutdownTask', 'LabVmsStartupTask', 'LabBillingTask'
+             * @return the next definition stage
+             */
+            WithCreate withTaskType(TaskType taskType);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify TimeZoneId.
+         */
+        interface WithTimeZoneId {
+            /**
+             * Specifies timeZoneId.
+             * @param timeZoneId The time zone id
+             * @return the next definition stage
+             */
+            WithCreate withTimeZoneId(String timeZoneId);
+        }
+
+        /**
+         * The stage of the schedule definition allowing to specify WeeklyRecurrence.
+         */
+        interface WithWeeklyRecurrence {
+            /**
+             * Specifies weeklyRecurrence.
+             * @param weeklyRecurrence The weekly recurrence of the schedule
+             * @return the next definition stage
+             */
+            WithCreate withWeeklyRecurrence(WeekDetails weeklyRecurrence);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<Schedule>, DefinitionStages.WithDailyRecurrence, DefinitionStages.WithHourlyRecurrence, DefinitionStages.WithProvisioningState, DefinitionStages.WithStatus, DefinitionStages.WithTags, DefinitionStages.WithTaskType, DefinitionStages.WithTimeZoneId, DefinitionStages.WithWeeklyRecurrence {
+        }
+    }
+    /**
+     * The template for a Schedule update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<Schedule>, UpdateStages.WithDailyRecurrence, UpdateStages.WithHourlyRecurrence, UpdateStages.WithProvisioningState, UpdateStages.WithStatus, UpdateStages.WithTags, UpdateStages.WithTaskType, UpdateStages.WithTimeZoneId, UpdateStages.WithWeeklyRecurrence {
+    }
+
+    /**
+     * Grouping of Schedule update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the schedule update allowing to specify DailyRecurrence.
+         */
+        interface WithDailyRecurrence {
+            /**
+             * Specifies dailyRecurrence.
+             * @param dailyRecurrence The daily recurrence of the schedule
+             * @return the next update stage
+             */
+            Update withDailyRecurrence(DayDetails dailyRecurrence);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify HourlyRecurrence.
+         */
+        interface WithHourlyRecurrence {
+            /**
+             * Specifies hourlyRecurrence.
+             * @param hourlyRecurrence The hourly recurrence of the schedule
+             * @return the next update stage
+             */
+            Update withHourlyRecurrence(HourDetails hourlyRecurrence);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify Status.
+         */
+        interface WithStatus {
+            /**
+             * Specifies status.
+             * @param status The status of the schedule. Possible values include: 'Enabled', 'Disabled'
+             * @return the next update stage
+             */
+            Update withStatus(EnableStatus status);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify TaskType.
+         */
+        interface WithTaskType {
+            /**
+             * Specifies taskType.
+             * @param taskType The task type of the schedule. Possible values include: 'LabVmsShutdownTask', 'LabVmsStartupTask', 'LabBillingTask'
+             * @return the next update stage
+             */
+            Update withTaskType(TaskType taskType);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify TimeZoneId.
+         */
+        interface WithTimeZoneId {
+            /**
+             * Specifies timeZoneId.
+             * @param timeZoneId The time zone id
+             * @return the next update stage
+             */
+            Update withTimeZoneId(String timeZoneId);
+        }
+
+        /**
+         * The stage of the schedule update allowing to specify WeeklyRecurrence.
+         */
+        interface WithWeeklyRecurrence {
+            /**
+             * Specifies weeklyRecurrence.
+             * @param weeklyRecurrence The weekly recurrence of the schedule
+             * @return the next update stage
+             */
+            Update withWeeklyRecurrence(WeekDetails weeklyRecurrence);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Schedules.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Schedules.java
new file mode 100644
index 000000000000..a0774b8f05c4
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Schedules.java
@@ -0,0 +1,64 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.SchedulesInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing Schedules.
+ */
+public interface Schedules extends SupportsCreating<Schedule.DefinitionStages.Blank>, HasInner<SchedulesInner> {
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable executeAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * Get schedule.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Schedule> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<Schedule> listAsync(final String resourceGroupName, final String labName);
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SourceControlType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SourceControlType.java
new file mode 100644
index 000000000000..096b5c474828
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SourceControlType.java
@@ -0,0 +1,41 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for SourceControlType.
+ */
+public final class SourceControlType extends ExpandableStringEnum<SourceControlType> {
+    /** Static value VsoGit for SourceControlType. */
+    public static final SourceControlType VSO_GIT = fromString("VsoGit");
+
+    /** Static value GitHub for SourceControlType. */
+    public static final SourceControlType GIT_HUB = fromString("GitHub");
+
+    /**
+     * Creates or finds a SourceControlType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding SourceControlType
+     */
+    @JsonCreator
+    public static SourceControlType fromString(String name) {
+        return fromString(name, SourceControlType.class);
+    }
+
+    /**
+     * @return known SourceControlType values
+     */
+    public static Collection<SourceControlType> values() {
+        return values(SourceControlType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Subnet.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Subnet.java
new file mode 100644
index 000000000000..7200b6e12a34
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/Subnet.java
@@ -0,0 +1,95 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The Subnet model.
+ */
+public class Subnet {
+    /**
+     * The resourceId property.
+     */
+    @JsonProperty(value = "resourceId")
+    private String resourceId;
+
+    /**
+     * The labSubnetName property.
+     */
+    @JsonProperty(value = "labSubnetName")
+    private String labSubnetName;
+
+    /**
+     * Possible values include: 'Default', 'Deny', 'Allow'.
+     */
+    @JsonProperty(value = "allowPublicIp")
+    private UsagePermissionType allowPublicIp;
+
+    /**
+     * Get the resourceId value.
+     *
+     * @return the resourceId value
+     */
+    public String resourceId() {
+        return this.resourceId;
+    }
+
+    /**
+     * Set the resourceId value.
+     *
+     * @param resourceId the resourceId value to set
+     * @return the Subnet object itself.
+     */
+    public Subnet withResourceId(String resourceId) {
+        this.resourceId = resourceId;
+        return this;
+    }
+
+    /**
+     * Get the labSubnetName value.
+     *
+     * @return the labSubnetName value
+     */
+    public String labSubnetName() {
+        return this.labSubnetName;
+    }
+
+    /**
+     * Set the labSubnetName value.
+     *
+     * @param labSubnetName the labSubnetName value to set
+     * @return the Subnet object itself.
+     */
+    public Subnet withLabSubnetName(String labSubnetName) {
+        this.labSubnetName = labSubnetName;
+        return this;
+    }
+
+    /**
+     * Get possible values include: 'Default', 'Deny', 'Allow'.
+     *
+     * @return the allowPublicIp value
+     */
+    public UsagePermissionType allowPublicIp() {
+        return this.allowPublicIp;
+    }
+
+    /**
+     * Set possible values include: 'Default', 'Deny', 'Allow'.
+     *
+     * @param allowPublicIp the allowPublicIp value to set
+     * @return the Subnet object itself.
+     */
+    public Subnet withAllowPublicIp(UsagePermissionType allowPublicIp) {
+        this.allowPublicIp = allowPublicIp;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubnetOverride.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubnetOverride.java
new file mode 100644
index 000000000000..abfaed4d231e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubnetOverride.java
@@ -0,0 +1,124 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Property overrides on a subnet of a virtual network.
+ */
+public class SubnetOverride {
+    /**
+     * The resource identifier of the subnet.
+     */
+    @JsonProperty(value = "resourceId")
+    private String resourceId;
+
+    /**
+     * The name given to the subnet within the lab.
+     */
+    @JsonProperty(value = "labSubnetName")
+    private String labSubnetName;
+
+    /**
+     * Indicates whether this subnet can be used during virtual machine
+     * creation. Possible values include: 'Default', 'Deny', 'Allow'.
+     */
+    @JsonProperty(value = "useInVmCreationPermission")
+    private UsagePermissionType useInVmCreationPermission;
+
+    /**
+     * Indicates whether public IP addresses can be assigned to virtual
+     * machines on this subnet. Possible values include: 'Default', 'Deny',
+     * 'Allow'.
+     */
+    @JsonProperty(value = "usePublicIpAddressPermission")
+    private UsagePermissionType usePublicIpAddressPermission;
+
+    /**
+     * Get the resource identifier of the subnet.
+     *
+     * @return the resourceId value
+     */
+    public String resourceId() {
+        return this.resourceId;
+    }
+
+    /**
+     * Set the resource identifier of the subnet.
+     *
+     * @param resourceId the resourceId value to set
+     * @return the SubnetOverride object itself.
+     */
+    public SubnetOverride withResourceId(String resourceId) {
+        this.resourceId = resourceId;
+        return this;
+    }
+
+    /**
+     * Get the name given to the subnet within the lab.
+     *
+     * @return the labSubnetName value
+     */
+    public String labSubnetName() {
+        return this.labSubnetName;
+    }
+
+    /**
+     * Set the name given to the subnet within the lab.
+     *
+     * @param labSubnetName the labSubnetName value to set
+     * @return the SubnetOverride object itself.
+     */
+    public SubnetOverride withLabSubnetName(String labSubnetName) {
+        this.labSubnetName = labSubnetName;
+        return this;
+    }
+
+    /**
+     * Get indicates whether this subnet can be used during virtual machine creation. Possible values include: 'Default', 'Deny', 'Allow'.
+     *
+     * @return the useInVmCreationPermission value
+     */
+    public UsagePermissionType useInVmCreationPermission() {
+        return this.useInVmCreationPermission;
+    }
+
+    /**
+     * Set indicates whether this subnet can be used during virtual machine creation. Possible values include: 'Default', 'Deny', 'Allow'.
+     *
+     * @param useInVmCreationPermission the useInVmCreationPermission value to set
+     * @return the SubnetOverride object itself.
+     */
+    public SubnetOverride withUseInVmCreationPermission(UsagePermissionType useInVmCreationPermission) {
+        this.useInVmCreationPermission = useInVmCreationPermission;
+        return this;
+    }
+
+    /**
+     * Get indicates whether public IP addresses can be assigned to virtual machines on this subnet. Possible values include: 'Default', 'Deny', 'Allow'.
+     *
+     * @return the usePublicIpAddressPermission value
+     */
+    public UsagePermissionType usePublicIpAddressPermission() {
+        return this.usePublicIpAddressPermission;
+    }
+
+    /**
+     * Set indicates whether public IP addresses can be assigned to virtual machines on this subnet. Possible values include: 'Default', 'Deny', 'Allow'.
+     *
+     * @param usePublicIpAddressPermission the usePublicIpAddressPermission value to set
+     * @return the SubnetOverride object itself.
+     */
+    public SubnetOverride withUsePublicIpAddressPermission(UsagePermissionType usePublicIpAddressPermission) {
+        this.usePublicIpAddressPermission = usePublicIpAddressPermission;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotification.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotification.java
new file mode 100644
index 000000000000..72788688b47b
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotification.java
@@ -0,0 +1,96 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The SubscriptionNotification model.
+ */
+public class SubscriptionNotification {
+    /**
+     * The registrationDate property.
+     */
+    @JsonProperty(value = "registrationDate")
+    private String registrationDate;
+
+    /**
+     * Possible values include: 'NotDefined', 'Registered', 'Unregistered',
+     * 'Warned', 'Suspended', 'Deleted'.
+     */
+    @JsonProperty(value = "state")
+    private SubscriptionNotificationState state;
+
+    /**
+     * The properties property.
+     */
+    @JsonProperty(value = "properties")
+    private SubscriptionNotificationProperties properties;
+
+    /**
+     * Get the registrationDate value.
+     *
+     * @return the registrationDate value
+     */
+    public String registrationDate() {
+        return this.registrationDate;
+    }
+
+    /**
+     * Set the registrationDate value.
+     *
+     * @param registrationDate the registrationDate value to set
+     * @return the SubscriptionNotification object itself.
+     */
+    public SubscriptionNotification withRegistrationDate(String registrationDate) {
+        this.registrationDate = registrationDate;
+        return this;
+    }
+
+    /**
+     * Get possible values include: 'NotDefined', 'Registered', 'Unregistered', 'Warned', 'Suspended', 'Deleted'.
+     *
+     * @return the state value
+     */
+    public SubscriptionNotificationState state() {
+        return this.state;
+    }
+
+    /**
+     * Set possible values include: 'NotDefined', 'Registered', 'Unregistered', 'Warned', 'Suspended', 'Deleted'.
+     *
+     * @param state the state value to set
+     * @return the SubscriptionNotification object itself.
+     */
+    public SubscriptionNotification withState(SubscriptionNotificationState state) {
+        this.state = state;
+        return this;
+    }
+
+    /**
+     * Get the properties value.
+     *
+     * @return the properties value
+     */
+    public SubscriptionNotificationProperties properties() {
+        return this.properties;
+    }
+
+    /**
+     * Set the properties value.
+     *
+     * @param properties the properties value to set
+     * @return the SubscriptionNotification object itself.
+     */
+    public SubscriptionNotification withProperties(SubscriptionNotificationProperties properties) {
+        this.properties = properties;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotificationProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotificationProperties.java
new file mode 100644
index 000000000000..2802e5ecfb4b
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotificationProperties.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The SubscriptionNotificationProperties model.
+ */
+public class SubscriptionNotificationProperties {
+    /**
+     * The tenantId property.
+     */
+    @JsonProperty(value = "tenantId")
+    private String tenantId;
+
+    /**
+     * Get the tenantId value.
+     *
+     * @return the tenantId value
+     */
+    public String tenantId() {
+        return this.tenantId;
+    }
+
+    /**
+     * Set the tenantId value.
+     *
+     * @param tenantId the tenantId value to set
+     * @return the SubscriptionNotificationProperties object itself.
+     */
+    public SubscriptionNotificationProperties withTenantId(String tenantId) {
+        this.tenantId = tenantId;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotificationState.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotificationState.java
new file mode 100644
index 000000000000..3adcba9c585c
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/SubscriptionNotificationState.java
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for SubscriptionNotificationState.
+ */
+public final class SubscriptionNotificationState extends ExpandableStringEnum<SubscriptionNotificationState> {
+    /** Static value NotDefined for SubscriptionNotificationState. */
+    public static final SubscriptionNotificationState NOT_DEFINED = fromString("NotDefined");
+
+    /** Static value Registered for SubscriptionNotificationState. */
+    public static final SubscriptionNotificationState REGISTERED = fromString("Registered");
+
+    /** Static value Unregistered for SubscriptionNotificationState. */
+    public static final SubscriptionNotificationState UNREGISTERED = fromString("Unregistered");
+
+    /** Static value Warned for SubscriptionNotificationState. */
+    public static final SubscriptionNotificationState WARNED = fromString("Warned");
+
+    /** Static value Suspended for SubscriptionNotificationState. */
+    public static final SubscriptionNotificationState SUSPENDED = fromString("Suspended");
+
+    /** Static value Deleted for SubscriptionNotificationState. */
+    public static final SubscriptionNotificationState DELETED = fromString("Deleted");
+
+    /**
+     * Creates or finds a SubscriptionNotificationState from its string representation.
+     * @param name a name to look for
+     * @return the corresponding SubscriptionNotificationState
+     */
+    @JsonCreator
+    public static SubscriptionNotificationState fromString(String name) {
+        return fromString(name, SubscriptionNotificationState.class);
+    }
+
+    /**
+     * @return known SubscriptionNotificationState values
+     */
+    public static Collection<SubscriptionNotificationState> values() {
+        return values(SubscriptionNotificationState.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/TaskType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/TaskType.java
new file mode 100644
index 000000000000..52a24f1de1b8
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/TaskType.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for TaskType.
+ */
+public final class TaskType extends ExpandableStringEnum<TaskType> {
+    /** Static value LabVmsShutdownTask for TaskType. */
+    public static final TaskType LAB_VMS_SHUTDOWN_TASK = fromString("LabVmsShutdownTask");
+
+    /** Static value LabVmsStartupTask for TaskType. */
+    public static final TaskType LAB_VMS_STARTUP_TASK = fromString("LabVmsStartupTask");
+
+    /** Static value LabBillingTask for TaskType. */
+    public static final TaskType LAB_BILLING_TASK = fromString("LabBillingTask");
+
+    /**
+     * Creates or finds a TaskType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding TaskType
+     */
+    @JsonCreator
+    public static TaskType fromString(String name) {
+        return fromString(name, TaskType.class);
+    }
+
+    /**
+     * @return known TaskType values
+     */
+    public static Collection<TaskType> values() {
+        return values(TaskType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/UsagePermissionType.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/UsagePermissionType.java
new file mode 100644
index 000000000000..485bbae4c579
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/UsagePermissionType.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for UsagePermissionType.
+ */
+public final class UsagePermissionType extends ExpandableStringEnum<UsagePermissionType> {
+    /** Static value Default for UsagePermissionType. */
+    public static final UsagePermissionType DEFAULT = fromString("Default");
+
+    /** Static value Deny for UsagePermissionType. */
+    public static final UsagePermissionType DENY = fromString("Deny");
+
+    /** Static value Allow for UsagePermissionType. */
+    public static final UsagePermissionType ALLOW = fromString("Allow");
+
+    /**
+     * Creates or finds a UsagePermissionType from its string representation.
+     * @param name a name to look for
+     * @return the corresponding UsagePermissionType
+     */
+    @JsonCreator
+    public static UsagePermissionType fromString(String name) {
+        return fromString(name, UsagePermissionType.class);
+    }
+
+    /**
+     * @return known UsagePermissionType values
+     */
+    public static Collection<UsagePermissionType> values() {
+        return values(UsagePermissionType.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VMCostProperties.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VMCostProperties.java
new file mode 100644
index 000000000000..1d67ef6f9b59
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VMCostProperties.java
@@ -0,0 +1,95 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * The VMCostProperties model.
+ */
+public class VMCostProperties {
+    /**
+     * The name property.
+     */
+    @JsonProperty(value = "name")
+    private String name;
+
+    /**
+     * The resourceGroupName property.
+     */
+    @JsonProperty(value = "resourceGroupName")
+    private String resourceGroupName;
+
+    /**
+     * The cost property.
+     */
+    @JsonProperty(value = "cost")
+    private Double cost;
+
+    /**
+     * Get the name value.
+     *
+     * @return the name value
+     */
+    public String name() {
+        return this.name;
+    }
+
+    /**
+     * Set the name value.
+     *
+     * @param name the name value to set
+     * @return the VMCostProperties object itself.
+     */
+    public VMCostProperties withName(String name) {
+        this.name = name;
+        return this;
+    }
+
+    /**
+     * Get the resourceGroupName value.
+     *
+     * @return the resourceGroupName value
+     */
+    public String resourceGroupName() {
+        return this.resourceGroupName;
+    }
+
+    /**
+     * Set the resourceGroupName value.
+     *
+     * @param resourceGroupName the resourceGroupName value to set
+     * @return the VMCostProperties object itself.
+     */
+    public VMCostProperties withResourceGroupName(String resourceGroupName) {
+        this.resourceGroupName = resourceGroupName;
+        return this;
+    }
+
+    /**
+     * Get the cost value.
+     *
+     * @return the cost value
+     */
+    public Double cost() {
+        return this.cost;
+    }
+
+    /**
+     * Set the cost value.
+     *
+     * @param cost the cost value to set
+     * @return the VMCostProperties object itself.
+     */
+    public VMCostProperties withCost(Double cost) {
+        this.cost = cost;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualMachines.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualMachines.java
new file mode 100644
index 000000000000..f1b38744ae8c
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualMachines.java
@@ -0,0 +1,86 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.VirtualMachinesInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing VirtualMachines.
+ */
+public interface VirtualMachines extends SupportsCreating<LabVirtualMachine.DefinitionStages.Blank>, HasInner<VirtualMachinesInner> {
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable applyArtifactsAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable startAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable stopAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * Get virtual machine.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<LabVirtualMachine> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<LabVirtualMachine> listAsync(final String resourceGroupName, final String labName);
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualNetwork.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualNetwork.java
new file mode 100644
index 000000000000..77bf6f730430
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualNetwork.java
@@ -0,0 +1,281 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.model.HasInner;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.VirtualNetworkInner;
+import com.microsoft.azure.arm.model.Indexable;
+import com.microsoft.azure.arm.model.Refreshable;
+import com.microsoft.azure.arm.model.Updatable;
+import com.microsoft.azure.arm.model.Appliable;
+import com.microsoft.azure.arm.model.Creatable;
+import com.microsoft.azure.arm.resources.models.HasManager;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.DevTestLabsManager;
+import java.util.List;
+import java.util.Map;
+
+/**
+ * Type representing VirtualNetwork.
+ */
+public interface VirtualNetwork extends HasInner<VirtualNetworkInner>, Indexable, Refreshable<VirtualNetwork>, Updatable<VirtualNetwork.Update>, HasManager<DevTestLabsManager> {
+    /**
+     * @return the allowedSubnets value.
+     */
+    List<Subnet> allowedSubnets();
+
+    /**
+     * @return the description value.
+     */
+    String description();
+
+    /**
+     * @return the externalProviderResourceId value.
+     */
+    String externalProviderResourceId();
+
+    /**
+     * @return the id value.
+     */
+    String id();
+
+    /**
+     * @return the location value.
+     */
+    String location();
+
+    /**
+     * @return the name value.
+     */
+    String name();
+
+    /**
+     * @return the provisioningState value.
+     */
+    String provisioningState();
+
+    /**
+     * @return the subnetOverrides value.
+     */
+    List<SubnetOverride> subnetOverrides();
+
+    /**
+     * @return the tags value.
+     */
+    Map<String, String> tags();
+
+    /**
+     * @return the type value.
+     */
+    String type();
+
+    /**
+     * The entirety of the VirtualNetwork definition.
+     */
+    interface Definition extends DefinitionStages.Blank, DefinitionStages.WithLab, DefinitionStages.WithLocation, DefinitionStages.WithCreate {
+    }
+
+    /**
+     * Grouping of VirtualNetwork definition stages.
+     */
+    interface DefinitionStages {
+        /**
+         * The first stage of a VirtualNetwork definition.
+         */
+        interface Blank extends WithLab {
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify Lab.
+         */
+        interface WithLab {
+           /**
+            * Specifies resourceGroupName, labName.
+            * @param resourceGroupName The name of the resource group
+            * @param labName The name of the lab
+            * @return the next definition stage
+            */
+            WithLocation withExistingLab(String resourceGroupName, String labName);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify Location.
+         */
+        interface WithLocation {
+           /**
+            * Specifies location.
+            * @param location the location parameter value
+            * @return the next definition stage
+            */
+            WithCreate withLocation(String location);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify AllowedSubnets.
+         */
+        interface WithAllowedSubnets {
+            /**
+             * Specifies allowedSubnets.
+             * @param allowedSubnets The allowed subnets of the virtual network
+             * @return the next definition stage
+             */
+            WithCreate withAllowedSubnets(List<Subnet> allowedSubnets);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the virtual network
+             * @return the next definition stage
+             */
+            WithCreate withDescription(String description);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify ExternalProviderResourceId.
+         */
+        interface WithExternalProviderResourceId {
+            /**
+             * Specifies externalProviderResourceId.
+             * @param externalProviderResourceId The Microsoft.Network resource identifier of the virtual network
+             * @return the next definition stage
+             */
+            WithCreate withExternalProviderResourceId(String externalProviderResourceId);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next definition stage
+             */
+            WithCreate withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify SubnetOverrides.
+         */
+        interface WithSubnetOverrides {
+            /**
+             * Specifies subnetOverrides.
+             * @param subnetOverrides The subnet overrides of the virtual network
+             * @return the next definition stage
+             */
+            WithCreate withSubnetOverrides(List<SubnetOverride> subnetOverrides);
+        }
+
+        /**
+         * The stage of the virtualnetwork definition allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next definition stage
+             */
+            WithCreate withTags(Map<String, String> tags);
+        }
+
+        /**
+         * The stage of the definition which contains all the minimum required inputs for
+         * the resource to be created (via {@link WithCreate#create()}), but also allows
+         * for any other optional settings to be specified.
+         */
+        interface WithCreate extends Creatable<VirtualNetwork>, DefinitionStages.WithAllowedSubnets, DefinitionStages.WithDescription, DefinitionStages.WithExternalProviderResourceId, DefinitionStages.WithProvisioningState, DefinitionStages.WithSubnetOverrides, DefinitionStages.WithTags {
+        }
+    }
+    /**
+     * The template for a VirtualNetwork update operation, containing all the settings that can be modified.
+     */
+    interface Update extends Appliable<VirtualNetwork>, UpdateStages.WithAllowedSubnets, UpdateStages.WithDescription, UpdateStages.WithExternalProviderResourceId, UpdateStages.WithProvisioningState, UpdateStages.WithSubnetOverrides, UpdateStages.WithTags {
+    }
+
+    /**
+     * Grouping of VirtualNetwork update stages.
+     */
+    interface UpdateStages {
+        /**
+         * The stage of the virtualnetwork update allowing to specify AllowedSubnets.
+         */
+        interface WithAllowedSubnets {
+            /**
+             * Specifies allowedSubnets.
+             * @param allowedSubnets The allowed subnets of the virtual network
+             * @return the next update stage
+             */
+            Update withAllowedSubnets(List<Subnet> allowedSubnets);
+        }
+
+        /**
+         * The stage of the virtualnetwork update allowing to specify Description.
+         */
+        interface WithDescription {
+            /**
+             * Specifies description.
+             * @param description The description of the virtual network
+             * @return the next update stage
+             */
+            Update withDescription(String description);
+        }
+
+        /**
+         * The stage of the virtualnetwork update allowing to specify ExternalProviderResourceId.
+         */
+        interface WithExternalProviderResourceId {
+            /**
+             * Specifies externalProviderResourceId.
+             * @param externalProviderResourceId The Microsoft.Network resource identifier of the virtual network
+             * @return the next update stage
+             */
+            Update withExternalProviderResourceId(String externalProviderResourceId);
+        }
+
+        /**
+         * The stage of the virtualnetwork update allowing to specify ProvisioningState.
+         */
+        interface WithProvisioningState {
+            /**
+             * Specifies provisioningState.
+             * @param provisioningState The provisioning status of the resource
+             * @return the next update stage
+             */
+            Update withProvisioningState(String provisioningState);
+        }
+
+        /**
+         * The stage of the virtualnetwork update allowing to specify SubnetOverrides.
+         */
+        interface WithSubnetOverrides {
+            /**
+             * Specifies subnetOverrides.
+             * @param subnetOverrides The subnet overrides of the virtual network
+             * @return the next update stage
+             */
+            Update withSubnetOverrides(List<SubnetOverride> subnetOverrides);
+        }
+
+        /**
+         * The stage of the virtualnetwork update allowing to specify Tags.
+         */
+        interface WithTags {
+            /**
+             * Specifies tags.
+             * @param tags the tags parameter value
+             * @return the next update stage
+             */
+            Update withTags(Map<String, String> tags);
+        }
+
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualNetworks.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualNetworks.java
new file mode 100644
index 000000000000..0788b26e5568
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/VirtualNetworks.java
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.microsoft.azure.arm.collection.SupportsCreating;
+import rx.Completable;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation.VirtualNetworksInner;
+import com.microsoft.azure.arm.model.HasInner;
+
+/**
+ * Type representing VirtualNetworks.
+ */
+public interface VirtualNetworks extends SupportsCreating<VirtualNetwork.DefinitionStages.Blank>, HasInner<VirtualNetworksInner> {
+    /**
+     * Get virtual network.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<VirtualNetwork> getResourceAsync(String resourceGroupName, String labName, String name);
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Observable<VirtualNetwork> listAsync(final String resourceGroupName, final String labName);
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    Completable deleteResourceAsync(String resourceGroupName, String labName, String name);
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WeekDetails.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WeekDetails.java
new file mode 100644
index 000000000000..b4f29b3aaa59
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WeekDetails.java
@@ -0,0 +1,70 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.List;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of a weekly schedule.
+ */
+public class WeekDetails {
+    /**
+     * The days of the week.
+     */
+    @JsonProperty(value = "weekdays")
+    private List<String> weekdays;
+
+    /**
+     * The time of the day.
+     */
+    @JsonProperty(value = "time")
+    private String time;
+
+    /**
+     * Get the days of the week.
+     *
+     * @return the weekdays value
+     */
+    public List<String> weekdays() {
+        return this.weekdays;
+    }
+
+    /**
+     * Set the days of the week.
+     *
+     * @param weekdays the weekdays value to set
+     * @return the WeekDetails object itself.
+     */
+    public WeekDetails withWeekdays(List<String> weekdays) {
+        this.weekdays = weekdays;
+        return this;
+    }
+
+    /**
+     * Get the time of the day.
+     *
+     * @return the time value
+     */
+    public String time() {
+        return this.time;
+    }
+
+    /**
+     * Set the time of the day.
+     *
+     * @param time the time value to set
+     * @return the WeekDetails object itself.
+     */
+    public WeekDetails withTime(String time) {
+        this.time = time;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WindowsOsInfo.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WindowsOsInfo.java
new file mode 100644
index 000000000000..debff43dc7dd
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WindowsOsInfo.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Information about a Windows OS.
+ */
+public class WindowsOsInfo {
+    /**
+     * The state of the Windows OS. Possible values include: 'NonSysprepped',
+     * 'SysprepRequested', 'SysprepApplied'.
+     */
+    @JsonProperty(value = "windowsOsState")
+    private WindowsOsState windowsOsState;
+
+    /**
+     * Get the state of the Windows OS. Possible values include: 'NonSysprepped', 'SysprepRequested', 'SysprepApplied'.
+     *
+     * @return the windowsOsState value
+     */
+    public WindowsOsState windowsOsState() {
+        return this.windowsOsState;
+    }
+
+    /**
+     * Set the state of the Windows OS. Possible values include: 'NonSysprepped', 'SysprepRequested', 'SysprepApplied'.
+     *
+     * @param windowsOsState the windowsOsState value to set
+     * @return the WindowsOsInfo object itself.
+     */
+    public WindowsOsInfo withWindowsOsState(WindowsOsState windowsOsState) {
+        this.windowsOsState = windowsOsState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WindowsOsState.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WindowsOsState.java
new file mode 100644
index 000000000000..616ad681b397
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/WindowsOsState.java
@@ -0,0 +1,44 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;
+
+import java.util.Collection;
+import com.fasterxml.jackson.annotation.JsonCreator;
+import com.microsoft.rest.ExpandableStringEnum;
+
+/**
+ * Defines values for WindowsOsState.
+ */
+public final class WindowsOsState extends ExpandableStringEnum<WindowsOsState> {
+    /** Static value NonSysprepped for WindowsOsState. */
+    public static final WindowsOsState NON_SYSPREPPED = fromString("NonSysprepped");
+
+    /** Static value SysprepRequested for WindowsOsState. */
+    public static final WindowsOsState SYSPREP_REQUESTED = fromString("SysprepRequested");
+
+    /** Static value SysprepApplied for WindowsOsState. */
+    public static final WindowsOsState SYSPREP_APPLIED = fromString("SysprepApplied");
+
+    /**
+     * Creates or finds a WindowsOsState from its string representation.
+     * @param name a name to look for
+     * @return the corresponding WindowsOsState
+     */
+    @JsonCreator
+    public static WindowsOsState fromString(String name) {
+        return fromString(name, WindowsOsState.class);
+    }
+
+    /**
+     * @return known WindowsOsState values
+     */
+    public static Collection<WindowsOsState> values() {
+        return values(WindowsOsState.class);
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArmTemplateInfoImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArmTemplateInfoImpl.java
new file mode 100644
index 000000000000..d4165f4fbca7
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArmTemplateInfoImpl.java
@@ -0,0 +1,36 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArmTemplateInfo;
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+
+class ArmTemplateInfoImpl extends WrapperImpl<ArmTemplateInfoInner> implements ArmTemplateInfo {
+    private final DevTestLabsManager manager;
+    ArmTemplateInfoImpl(ArmTemplateInfoInner inner, DevTestLabsManager manager) {
+        super(inner);
+        this.manager = manager;
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Object parameters() {
+        return this.inner().parameters();
+    }
+
+    @Override
+    public Object template() {
+        return this.inner().template();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArmTemplateInfoInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArmTemplateInfoInner.java
new file mode 100644
index 000000000000..e581608ec573
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArmTemplateInfoInner.java
@@ -0,0 +1,69 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Information about a generated ARM template.
+ */
+public class ArmTemplateInfoInner {
+    /**
+     * The template's contents.
+     */
+    @JsonProperty(value = "template")
+    private Object template;
+
+    /**
+     * The parameters of the ARM template.
+     */
+    @JsonProperty(value = "parameters")
+    private Object parameters;
+
+    /**
+     * Get the template's contents.
+     *
+     * @return the template value
+     */
+    public Object template() {
+        return this.template;
+    }
+
+    /**
+     * Set the template's contents.
+     *
+     * @param template the template value to set
+     * @return the ArmTemplateInfoInner object itself.
+     */
+    public ArmTemplateInfoInner withTemplate(Object template) {
+        this.template = template;
+        return this;
+    }
+
+    /**
+     * Get the parameters of the ARM template.
+     *
+     * @return the parameters value
+     */
+    public Object parameters() {
+        return this.parameters;
+    }
+
+    /**
+     * Set the parameters of the ARM template.
+     *
+     * @param parameters the parameters value to set
+     * @return the ArmTemplateInfoInner object itself.
+     */
+    public ArmTemplateInfoInner withParameters(Object parameters) {
+        this.parameters = parameters;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactImpl.java
new file mode 100644
index 000000000000..4406ccad78ff
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactImpl.java
@@ -0,0 +1,101 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifact;
+import com.microsoft.azure.arm.model.implementation.IndexableRefreshableWrapperImpl;
+import rx.Observable;
+import java.util.Map;
+
+class ArtifactImpl extends IndexableRefreshableWrapperImpl<Artifact, ArtifactInner> implements Artifact {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String artifactSourceName;
+    private String name;
+
+    ArtifactImpl(ArtifactInner inner,  DevTestLabsManager manager) {
+        super(null, inner);
+        this.manager = manager;
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.artifactSourceName = IdParsingUtils.getValueFromIdByName(inner.id(), "artifactsources");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "artifacts");
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    protected Observable<ArtifactInner> getInnerAsync() {
+        ArtifactsInner client = this.manager().inner().artifacts();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.artifactSourceName, this.name);
+    }
+
+
+
+    @Override
+    public String description() {
+        return this.inner().description();
+    }
+
+    @Override
+    public String filePath() {
+        return this.inner().filePath();
+    }
+
+    @Override
+    public String icon() {
+        return this.inner().icon();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public Object parameters() {
+        return this.inner().parameters();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String targetOsType() {
+        return this.inner().targetOsType();
+    }
+
+    @Override
+    public String title() {
+        return this.inner().title();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactInner.java
new file mode 100644
index 000000000000..49d44ad63238
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactInner.java
@@ -0,0 +1,176 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * An artifact.
+ */
+@JsonFlatten
+public class ArtifactInner extends Resource {
+    /**
+     * The title of the artifact.
+     */
+    @JsonProperty(value = "properties.title")
+    private String title;
+
+    /**
+     * The description of the artifact.
+     */
+    @JsonProperty(value = "properties.description")
+    private String description;
+
+    /**
+     * The file path of the artifact.
+     */
+    @JsonProperty(value = "properties.filePath")
+    private String filePath;
+
+    /**
+     * The icon of the artifact.
+     */
+    @JsonProperty(value = "properties.icon")
+    private String icon;
+
+    /**
+     * Gets or sets the type of the target os.
+     */
+    @JsonProperty(value = "properties.targetOsType")
+    private String targetOsType;
+
+    /**
+     * The parameters of the artifact.
+     */
+    @JsonProperty(value = "properties.parameters")
+    private Object parameters;
+
+    /**
+     * Get the title of the artifact.
+     *
+     * @return the title value
+     */
+    public String title() {
+        return this.title;
+    }
+
+    /**
+     * Set the title of the artifact.
+     *
+     * @param title the title value to set
+     * @return the ArtifactInner object itself.
+     */
+    public ArtifactInner withTitle(String title) {
+        this.title = title;
+        return this;
+    }
+
+    /**
+     * Get the description of the artifact.
+     *
+     * @return the description value
+     */
+    public String description() {
+        return this.description;
+    }
+
+    /**
+     * Set the description of the artifact.
+     *
+     * @param description the description value to set
+     * @return the ArtifactInner object itself.
+     */
+    public ArtifactInner withDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    /**
+     * Get the file path of the artifact.
+     *
+     * @return the filePath value
+     */
+    public String filePath() {
+        return this.filePath;
+    }
+
+    /**
+     * Set the file path of the artifact.
+     *
+     * @param filePath the filePath value to set
+     * @return the ArtifactInner object itself.
+     */
+    public ArtifactInner withFilePath(String filePath) {
+        this.filePath = filePath;
+        return this;
+    }
+
+    /**
+     * Get the icon of the artifact.
+     *
+     * @return the icon value
+     */
+    public String icon() {
+        return this.icon;
+    }
+
+    /**
+     * Set the icon of the artifact.
+     *
+     * @param icon the icon value to set
+     * @return the ArtifactInner object itself.
+     */
+    public ArtifactInner withIcon(String icon) {
+        this.icon = icon;
+        return this;
+    }
+
+    /**
+     * Get gets or sets the type of the target os.
+     *
+     * @return the targetOsType value
+     */
+    public String targetOsType() {
+        return this.targetOsType;
+    }
+
+    /**
+     * Set gets or sets the type of the target os.
+     *
+     * @param targetOsType the targetOsType value to set
+     * @return the ArtifactInner object itself.
+     */
+    public ArtifactInner withTargetOsType(String targetOsType) {
+        this.targetOsType = targetOsType;
+        return this;
+    }
+
+    /**
+     * Get the parameters of the artifact.
+     *
+     * @return the parameters value
+     */
+    public Object parameters() {
+        return this.parameters;
+    }
+
+    /**
+     * Set the parameters of the artifact.
+     *
+     * @param parameters the parameters value to set
+     * @return the ArtifactInner object itself.
+     */
+    public ArtifactInner withParameters(Object parameters) {
+        this.parameters = parameters;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourceImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourceImpl.java
new file mode 100644
index 000000000000..41cd2393a900
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourceImpl.java
@@ -0,0 +1,207 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSource;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.SourceControlType;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EnableStatus;
+import java.util.Map;
+
+class ArtifactSourceImpl extends CreatableUpdatableImpl<ArtifactSource, ArtifactSourceInner, ArtifactSourceImpl> implements ArtifactSource, ArtifactSource.Definition, ArtifactSource.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    ArtifactSourceImpl(String name, DevTestLabsManager manager) {
+        super(name, new ArtifactSourceInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    ArtifactSourceImpl(ArtifactSourceInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "artifactsources");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<ArtifactSource> createResourceAsync() {
+        ArtifactSourcesInner client = this.manager().inner().artifactSources();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<ArtifactSource> updateResourceAsync() {
+        ArtifactSourcesInner client = this.manager().inner().artifactSources();
+        return client.patchResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<ArtifactSourceInner> getInnerAsync() {
+        ArtifactSourcesInner client = this.manager().inner().artifactSources();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public String branchRef() {
+        return this.inner().branchRef();
+    }
+
+    @Override
+    public String displayName() {
+        return this.inner().displayName();
+    }
+
+    @Override
+    public String folderPath() {
+        return this.inner().folderPath();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public String securityToken() {
+        return this.inner().securityToken();
+    }
+
+    @Override
+    public SourceControlType sourceType() {
+        return this.inner().sourceType();
+    }
+
+    @Override
+    public EnableStatus status() {
+        return this.inner().status();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public String uri() {
+        return this.inner().uri();
+    }
+
+    @Override
+    public ArtifactSourceImpl withExistingLab(String resourceGroupName, String labName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withBranchRef(String branchRef) {
+        this.inner().withBranchRef(branchRef);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withDisplayName(String displayName) {
+        this.inner().withDisplayName(displayName);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withFolderPath(String folderPath) {
+        this.inner().withFolderPath(folderPath);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withSecurityToken(String securityToken) {
+        this.inner().withSecurityToken(securityToken);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withSourceType(SourceControlType sourceType) {
+        this.inner().withSourceType(sourceType);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withStatus(EnableStatus status) {
+        this.inner().withStatus(status);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+    @Override
+    public ArtifactSourceImpl withUri(String uri) {
+        this.inner().withUri(uri);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourceInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourceInner.java
new file mode 100644
index 000000000000..a5a76c112013
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourceInner.java
@@ -0,0 +1,232 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.SourceControlType;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EnableStatus;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * Properties of an artifact source.
+ */
+@JsonFlatten
+public class ArtifactSourceInner extends Resource {
+    /**
+     * The display name of the artifact source.
+     */
+    @JsonProperty(value = "properties.displayName")
+    private String displayName;
+
+    /**
+     * The URI of the artifact source.
+     */
+    @JsonProperty(value = "properties.uri")
+    private String uri;
+
+    /**
+     * The type of the artifact source. Possible values include: 'VsoGit',
+     * 'GitHub'.
+     */
+    @JsonProperty(value = "properties.sourceType")
+    private SourceControlType sourceType;
+
+    /**
+     * The folder path of the artifact source.
+     */
+    @JsonProperty(value = "properties.folderPath")
+    private String folderPath;
+
+    /**
+     * The branch reference of the artifact source.
+     */
+    @JsonProperty(value = "properties.branchRef")
+    private String branchRef;
+
+    /**
+     * The security token of the artifact source.
+     */
+    @JsonProperty(value = "properties.securityToken")
+    private String securityToken;
+
+    /**
+     * The status of the artifact source. Possible values include: 'Enabled',
+     * 'Disabled'.
+     */
+    @JsonProperty(value = "properties.status")
+    private EnableStatus status;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the display name of the artifact source.
+     *
+     * @return the displayName value
+     */
+    public String displayName() {
+        return this.displayName;
+    }
+
+    /**
+     * Set the display name of the artifact source.
+     *
+     * @param displayName the displayName value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withDisplayName(String displayName) {
+        this.displayName = displayName;
+        return this;
+    }
+
+    /**
+     * Get the URI of the artifact source.
+     *
+     * @return the uri value
+     */
+    public String uri() {
+        return this.uri;
+    }
+
+    /**
+     * Set the URI of the artifact source.
+     *
+     * @param uri the uri value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withUri(String uri) {
+        this.uri = uri;
+        return this;
+    }
+
+    /**
+     * Get the type of the artifact source. Possible values include: 'VsoGit', 'GitHub'.
+     *
+     * @return the sourceType value
+     */
+    public SourceControlType sourceType() {
+        return this.sourceType;
+    }
+
+    /**
+     * Set the type of the artifact source. Possible values include: 'VsoGit', 'GitHub'.
+     *
+     * @param sourceType the sourceType value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withSourceType(SourceControlType sourceType) {
+        this.sourceType = sourceType;
+        return this;
+    }
+
+    /**
+     * Get the folder path of the artifact source.
+     *
+     * @return the folderPath value
+     */
+    public String folderPath() {
+        return this.folderPath;
+    }
+
+    /**
+     * Set the folder path of the artifact source.
+     *
+     * @param folderPath the folderPath value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withFolderPath(String folderPath) {
+        this.folderPath = folderPath;
+        return this;
+    }
+
+    /**
+     * Get the branch reference of the artifact source.
+     *
+     * @return the branchRef value
+     */
+    public String branchRef() {
+        return this.branchRef;
+    }
+
+    /**
+     * Set the branch reference of the artifact source.
+     *
+     * @param branchRef the branchRef value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withBranchRef(String branchRef) {
+        this.branchRef = branchRef;
+        return this;
+    }
+
+    /**
+     * Get the security token of the artifact source.
+     *
+     * @return the securityToken value
+     */
+    public String securityToken() {
+        return this.securityToken;
+    }
+
+    /**
+     * Set the security token of the artifact source.
+     *
+     * @param securityToken the securityToken value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withSecurityToken(String securityToken) {
+        this.securityToken = securityToken;
+        return this;
+    }
+
+    /**
+     * Get the status of the artifact source. Possible values include: 'Enabled', 'Disabled'.
+     *
+     * @return the status value
+     */
+    public EnableStatus status() {
+        return this.status;
+    }
+
+    /**
+     * Set the status of the artifact source. Possible values include: 'Enabled', 'Disabled'.
+     *
+     * @param status the status value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withStatus(EnableStatus status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the ArtifactSourceInner object itself.
+     */
+    public ArtifactSourceInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourcesImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourcesImpl.java
new file mode 100644
index 000000000000..b6676d0b1c66
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourcesImpl.java
@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSource;
+
+class ArtifactSourcesImpl extends WrapperImpl<ArtifactSourcesInner> implements ArtifactSources {
+    private final DevTestLabsManager manager;
+
+    ArtifactSourcesImpl(DevTestLabsManager manager) {
+        super(manager.inner().artifactSources());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public ArtifactSourceImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private ArtifactSourceImpl wrapModel(ArtifactSourceInner inner) {
+        return  new ArtifactSourceImpl(inner, manager());
+    }
+
+    private ArtifactSourceImpl wrapModel(String name) {
+        return new ArtifactSourceImpl(name, this.manager());
+    }
+
+    @Override
+    public Observable<ArtifactSource> listAsync(final String resourceGroupName, final String labName) {
+        ArtifactSourcesInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<ArtifactSourceInner>, Iterable<ArtifactSourceInner>>() {
+            @Override
+            public Iterable<ArtifactSourceInner> call(Page<ArtifactSourceInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<ArtifactSourceInner, ArtifactSource>() {
+            @Override
+            public ArtifactSource call(ArtifactSourceInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<ArtifactSource> getResourceAsync(String resourceGroupName, String labName, String name) {
+        ArtifactSourcesInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<ArtifactSourceInner, Observable<ArtifactSource>>() {
+            @Override
+            public Observable<ArtifactSource> call(ArtifactSourceInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((ArtifactSource)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        ArtifactSourcesInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourcesInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourcesInner.java
new file mode 100644
index 000000000000..63cef047ef37
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactSourcesInner.java
@@ -0,0 +1,848 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in ArtifactSources.
+ */
+public class ArtifactSourcesInner {
+    /** The Retrofit service to perform REST calls. */
+    private ArtifactSourcesService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of ArtifactSourcesInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public ArtifactSourcesInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(ArtifactSourcesService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for ArtifactSources to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface ArtifactSourcesService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body ArtifactSourceInner artifactSource, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources patchResource" })
+        @PATCH("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{name}")
+        Observable<Response<ResponseBody>> patchResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body ArtifactSourceInner artifactSource, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ArtifactSourceInner&gt; object if successful.
+     */
+    public PagedList<ArtifactSourceInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<ArtifactSourceInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<ArtifactSourceInner>(response.body()) {
+            @Override
+            public Page<ArtifactSourceInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ArtifactSourceInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<ArtifactSourceInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactSourceInner&gt; object
+     */
+    public Observable<Page<ArtifactSourceInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<ArtifactSourceInner>>, Page<ArtifactSourceInner>>() {
+                @Override
+                public Page<ArtifactSourceInner> call(ServiceResponse<Page<ArtifactSourceInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactSourceInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ArtifactSourceInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<ArtifactSourceInner>>, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(ServiceResponse<Page<ArtifactSourceInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ArtifactSourceInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ArtifactSourceInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ArtifactSourceInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ArtifactSourceInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ArtifactSourceInner&gt; object if successful.
+     */
+    public PagedList<ArtifactSourceInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<ArtifactSourceInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<ArtifactSourceInner>(response.body()) {
+            @Override
+            public Page<ArtifactSourceInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ArtifactSourceInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<ArtifactSourceInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactSourceInner&gt; object
+     */
+    public Observable<Page<ArtifactSourceInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<ArtifactSourceInner>>, Page<ArtifactSourceInner>>() {
+                @Override
+                public Page<ArtifactSourceInner> call(ServiceResponse<Page<ArtifactSourceInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactSourceInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ArtifactSourceInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<ArtifactSourceInner>>, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(ServiceResponse<Page<ArtifactSourceInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+    ServiceResponse<PageImpl<ArtifactSourceInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<ArtifactSourceInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<ArtifactSourceInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<ArtifactSourceInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<ArtifactSourceInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ArtifactSourceInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ArtifactSourceInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ArtifactSourceInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ArtifactSourceInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<ArtifactSourceInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<ArtifactSourceInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<ArtifactSourceInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ArtifactSourceInner object if successful.
+     */
+    public ArtifactSourceInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ArtifactSourceInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<ArtifactSourceInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactSourceInner object
+     */
+    public Observable<ArtifactSourceInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<ArtifactSourceInner>, ArtifactSourceInner>() {
+            @Override
+            public ArtifactSourceInner call(ServiceResponse<ArtifactSourceInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactSourceInner object
+     */
+    public Observable<ServiceResponse<ArtifactSourceInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ArtifactSourceInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ArtifactSourceInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ArtifactSourceInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ArtifactSourceInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ArtifactSourceInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ArtifactSourceInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ArtifactSourceInner object if successful.
+     */
+    public ArtifactSourceInner createOrUpdateResource(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, artifactSource).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ArtifactSourceInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource, final ServiceCallback<ArtifactSourceInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, artifactSource), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactSourceInner object
+     */
+    public Observable<ArtifactSourceInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, artifactSource).map(new Func1<ServiceResponse<ArtifactSourceInner>, ArtifactSourceInner>() {
+            @Override
+            public ArtifactSourceInner call(ServiceResponse<ArtifactSourceInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactSourceInner object
+     */
+    public Observable<ServiceResponse<ArtifactSourceInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (artifactSource == null) {
+            throw new IllegalArgumentException("Parameter artifactSource is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(artifactSource);
+        return service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, artifactSource, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ArtifactSourceInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ArtifactSourceInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ArtifactSourceInner> clientResponse = createOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ArtifactSourceInner> createOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ArtifactSourceInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ArtifactSourceInner>() { }.getType())
+                .register(201, new TypeToken<ArtifactSourceInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete artifact source.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = deleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> deleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Modify properties of artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ArtifactSourceInner object if successful.
+     */
+    public ArtifactSourceInner patchResource(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, artifactSource).toBlocking().single().body();
+    }
+
+    /**
+     * Modify properties of artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ArtifactSourceInner> patchResourceAsync(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource, final ServiceCallback<ArtifactSourceInner> serviceCallback) {
+        return ServiceFuture.fromResponse(patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, artifactSource), serviceCallback);
+    }
+
+    /**
+     * Modify properties of artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactSourceInner object
+     */
+    public Observable<ArtifactSourceInner> patchResourceAsync(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, artifactSource).map(new Func1<ServiceResponse<ArtifactSourceInner>, ArtifactSourceInner>() {
+            @Override
+            public ArtifactSourceInner call(ServiceResponse<ArtifactSourceInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Modify properties of artifact sources.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the artifact source.
+     * @param artifactSource the ArtifactSourceInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactSourceInner object
+     */
+    public Observable<ServiceResponse<ArtifactSourceInner>> patchResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, ArtifactSourceInner artifactSource) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (artifactSource == null) {
+            throw new IllegalArgumentException("Parameter artifactSource is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(artifactSource);
+        return service.patchResource(this.client.subscriptionId(), resourceGroupName, labName, name, artifactSource, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ArtifactSourceInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ArtifactSourceInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ArtifactSourceInner> clientResponse = patchResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ArtifactSourceInner> patchResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ArtifactSourceInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ArtifactSourceInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ArtifactSourceInner&gt; object if successful.
+     */
+    public PagedList<ArtifactSourceInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<ArtifactSourceInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<ArtifactSourceInner>(response.body()) {
+            @Override
+            public Page<ArtifactSourceInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ArtifactSourceInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<ArtifactSourceInner>> serviceFuture, final ListOperationCallback<ArtifactSourceInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactSourceInner&gt; object
+     */
+    public Observable<Page<ArtifactSourceInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<ArtifactSourceInner>>, Page<ArtifactSourceInner>>() {
+                @Override
+                public Page<ArtifactSourceInner> call(ServiceResponse<Page<ArtifactSourceInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactSourceInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ArtifactSourceInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<ArtifactSourceInner>>, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(ServiceResponse<Page<ArtifactSourceInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List artifact sources.
+     *
+    ServiceResponse<PageImpl<ArtifactSourceInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ArtifactSourceInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ArtifactSourceInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ArtifactSourceInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactSourceInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ArtifactSourceInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ArtifactSourceInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<ArtifactSourceInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<ArtifactSourceInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<ArtifactSourceInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactsImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactsImpl.java
new file mode 100644
index 000000000000..9cdab2177d65
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactsImpl.java
@@ -0,0 +1,83 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifacts;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArmTemplateInfo;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GenerateArmTemplateRequest;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifact;
+
+class ArtifactsImpl extends WrapperImpl<ArtifactsInner> implements Artifacts {
+    private final DevTestLabsManager manager;
+
+    ArtifactsImpl(DevTestLabsManager manager) {
+        super(manager.inner().artifacts());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    private ArtifactImpl wrapModel(ArtifactInner inner) {
+        return  new ArtifactImpl(inner, manager());
+    }
+
+    @Override
+    public Observable<ArmTemplateInfo> generateArmTemplateAsync(String resourceGroupName, String labName, String artifactSourceName, String name, GenerateArmTemplateRequest generateArmTemplateRequest) {
+        ArtifactsInner client = this.inner();
+        return client.generateArmTemplateAsync(resourceGroupName, labName, artifactSourceName, name, generateArmTemplateRequest)
+        .map(new Func1<ArmTemplateInfoInner, ArmTemplateInfo>() {
+            @Override
+            public ArmTemplateInfo call(ArmTemplateInfoInner inner) {
+                return new ArmTemplateInfoImpl(inner, manager());
+            }
+        });
+    }
+
+    @Override
+    public Observable<Artifact> listAsync(final String resourceGroupName, final String labName, final String artifactSourceName) {
+        ArtifactsInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName, artifactSourceName)
+        .flatMapIterable(new Func1<Page<ArtifactInner>, Iterable<ArtifactInner>>() {
+            @Override
+            public Iterable<ArtifactInner> call(Page<ArtifactInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<ArtifactInner, Artifact>() {
+            @Override
+            public Artifact call(ArtifactInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<Artifact> getResourceAsync(String resourceGroupName, String labName, String artifactSourceName, String name) {
+        ArtifactsInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, artifactSourceName, name)
+        .flatMap(new Func1<ArtifactInner, Observable<Artifact>>() {
+            @Override
+            public Observable<Artifact> call(ArtifactInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((Artifact)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactsInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactsInner.java
new file mode 100644
index 000000000000..b159afca346e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ArtifactsInner.java
@@ -0,0 +1,674 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GenerateArmTemplateRequest;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in Artifacts.
+ */
+public class ArtifactsInner {
+    /** The Retrofit service to perform REST calls. */
+    private ArtifactsService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of ArtifactsInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public ArtifactsInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(ArtifactsService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for Artifacts to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface ArtifactsService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifacts list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{artifactSourceName}/artifacts")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("artifactSourceName") String artifactSourceName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifacts getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{artifactSourceName}/artifacts/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("artifactSourceName") String artifactSourceName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifacts generateArmTemplate" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/artifactsources/{artifactSourceName}/artifacts/{name}/generateArmTemplate")
+        Observable<Response<ResponseBody>> generateArmTemplate(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("artifactSourceName") String artifactSourceName, @Path("name") String name, @Body GenerateArmTemplateRequest generateArmTemplateRequest, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifacts listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ArtifactInner&gt; object if successful.
+     */
+    public PagedList<ArtifactInner> list(final String resourceGroupName, final String labName, final String artifactSourceName) {
+        ServiceResponse<Page<ArtifactInner>> response = listSinglePageAsync(resourceGroupName, labName, artifactSourceName).toBlocking().single();
+        return new PagedList<ArtifactInner>(response.body()) {
+            @Override
+            public Page<ArtifactInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ArtifactInner>> listAsync(final String resourceGroupName, final String labName, final String artifactSourceName, final ListOperationCallback<ArtifactInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, artifactSourceName),
+            new Func1<String, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactInner&gt; object
+     */
+    public Observable<Page<ArtifactInner>> listAsync(final String resourceGroupName, final String labName, final String artifactSourceName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName)
+            .map(new Func1<ServiceResponse<Page<ArtifactInner>>, Page<ArtifactInner>>() {
+                @Override
+                public Page<ArtifactInner> call(ServiceResponse<Page<ArtifactInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ArtifactInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String artifactSourceName) {
+        return listSinglePageAsync(resourceGroupName, labName, artifactSourceName)
+            .concatMap(new Func1<ServiceResponse<Page<ArtifactInner>>, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(ServiceResponse<Page<ArtifactInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ArtifactInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ArtifactInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String artifactSourceName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (artifactSourceName == null) {
+            throw new IllegalArgumentException("Parameter artifactSourceName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, artifactSourceName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ArtifactInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ArtifactInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ArtifactInner&gt; object if successful.
+     */
+    public PagedList<ArtifactInner> list(final String resourceGroupName, final String labName, final String artifactSourceName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<ArtifactInner>> response = listSinglePageAsync(resourceGroupName, labName, artifactSourceName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<ArtifactInner>(response.body()) {
+            @Override
+            public Page<ArtifactInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ArtifactInner>> listAsync(final String resourceGroupName, final String labName, final String artifactSourceName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<ArtifactInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, artifactSourceName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactInner&gt; object
+     */
+    public Observable<Page<ArtifactInner>> listAsync(final String resourceGroupName, final String labName, final String artifactSourceName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<ArtifactInner>>, Page<ArtifactInner>>() {
+                @Override
+                public Page<ArtifactInner> call(ServiceResponse<Page<ArtifactInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ArtifactInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String artifactSourceName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, artifactSourceName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<ArtifactInner>>, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(ServiceResponse<Page<ArtifactInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+    ServiceResponse<PageImpl<ArtifactInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<ArtifactInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<ArtifactInner>> * @param artifactSourceName The name of the artifact source.
+    ServiceResponse<PageImpl<ArtifactInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<ArtifactInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<ArtifactInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ArtifactInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ArtifactInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String artifactSourceName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (artifactSourceName == null) {
+            throw new IllegalArgumentException("Parameter artifactSourceName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, artifactSourceName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ArtifactInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ArtifactInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<ArtifactInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<ArtifactInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<ArtifactInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ArtifactInner object if successful.
+     */
+    public ArtifactInner getResource(String resourceGroupName, String labName, String artifactSourceName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ArtifactInner> getResourceAsync(String resourceGroupName, String labName, String artifactSourceName, String name, final ServiceCallback<ArtifactInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, name), serviceCallback);
+    }
+
+    /**
+     * Get artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactInner object
+     */
+    public Observable<ArtifactInner> getResourceAsync(String resourceGroupName, String labName, String artifactSourceName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, name).map(new Func1<ServiceResponse<ArtifactInner>, ArtifactInner>() {
+            @Override
+            public ArtifactInner call(ServiceResponse<ArtifactInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArtifactInner object
+     */
+    public Observable<ServiceResponse<ArtifactInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String artifactSourceName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (artifactSourceName == null) {
+            throw new IllegalArgumentException("Parameter artifactSourceName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, artifactSourceName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ArtifactInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ArtifactInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ArtifactInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ArtifactInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ArtifactInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ArtifactInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Generates an ARM template for the given artifact, uploads the required files to a storage account, and validates the generated artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @param generateArmTemplateRequest the GenerateArmTemplateRequest value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ArmTemplateInfoInner object if successful.
+     */
+    public ArmTemplateInfoInner generateArmTemplate(String resourceGroupName, String labName, String artifactSourceName, String name, GenerateArmTemplateRequest generateArmTemplateRequest) {
+        return generateArmTemplateWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, name, generateArmTemplateRequest).toBlocking().single().body();
+    }
+
+    /**
+     * Generates an ARM template for the given artifact, uploads the required files to a storage account, and validates the generated artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @param generateArmTemplateRequest the GenerateArmTemplateRequest value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ArmTemplateInfoInner> generateArmTemplateAsync(String resourceGroupName, String labName, String artifactSourceName, String name, GenerateArmTemplateRequest generateArmTemplateRequest, final ServiceCallback<ArmTemplateInfoInner> serviceCallback) {
+        return ServiceFuture.fromResponse(generateArmTemplateWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, name, generateArmTemplateRequest), serviceCallback);
+    }
+
+    /**
+     * Generates an ARM template for the given artifact, uploads the required files to a storage account, and validates the generated artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @param generateArmTemplateRequest the GenerateArmTemplateRequest value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArmTemplateInfoInner object
+     */
+    public Observable<ArmTemplateInfoInner> generateArmTemplateAsync(String resourceGroupName, String labName, String artifactSourceName, String name, GenerateArmTemplateRequest generateArmTemplateRequest) {
+        return generateArmTemplateWithServiceResponseAsync(resourceGroupName, labName, artifactSourceName, name, generateArmTemplateRequest).map(new Func1<ServiceResponse<ArmTemplateInfoInner>, ArmTemplateInfoInner>() {
+            @Override
+            public ArmTemplateInfoInner call(ServiceResponse<ArmTemplateInfoInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Generates an ARM template for the given artifact, uploads the required files to a storage account, and validates the generated artifact.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param artifactSourceName The name of the artifact source.
+     * @param name The name of the artifact.
+     * @param generateArmTemplateRequest the GenerateArmTemplateRequest value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ArmTemplateInfoInner object
+     */
+    public Observable<ServiceResponse<ArmTemplateInfoInner>> generateArmTemplateWithServiceResponseAsync(String resourceGroupName, String labName, String artifactSourceName, String name, GenerateArmTemplateRequest generateArmTemplateRequest) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (artifactSourceName == null) {
+            throw new IllegalArgumentException("Parameter artifactSourceName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (generateArmTemplateRequest == null) {
+            throw new IllegalArgumentException("Parameter generateArmTemplateRequest is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(generateArmTemplateRequest);
+        return service.generateArmTemplate(this.client.subscriptionId(), resourceGroupName, labName, artifactSourceName, name, generateArmTemplateRequest, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ArmTemplateInfoInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ArmTemplateInfoInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ArmTemplateInfoInner> clientResponse = generateArmTemplateDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ArmTemplateInfoInner> generateArmTemplateDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ArmTemplateInfoInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ArmTemplateInfoInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ArtifactInner&gt; object if successful.
+     */
+    public PagedList<ArtifactInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<ArtifactInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<ArtifactInner>(response.body()) {
+            @Override
+            public Page<ArtifactInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ArtifactInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<ArtifactInner>> serviceFuture, final ListOperationCallback<ArtifactInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactInner&gt; object
+     */
+    public Observable<Page<ArtifactInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<ArtifactInner>>, Page<ArtifactInner>>() {
+                @Override
+                public Page<ArtifactInner> call(ServiceResponse<Page<ArtifactInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ArtifactInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ArtifactInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<ArtifactInner>>, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(ServiceResponse<Page<ArtifactInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List artifacts.
+     *
+    ServiceResponse<PageImpl<ArtifactInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ArtifactInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ArtifactInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ArtifactInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ArtifactInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ArtifactInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ArtifactInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<ArtifactInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<ArtifactInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<ArtifactInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostImpl.java
new file mode 100644
index 000000000000..b49c9d9dc7b1
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostImpl.java
@@ -0,0 +1,81 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Cost;
+import com.microsoft.azure.arm.model.implementation.IndexableRefreshableWrapperImpl;
+import rx.Observable;
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostPerDayProperties;
+import java.util.Map;
+
+class CostImpl extends IndexableRefreshableWrapperImpl<Cost, CostInner> implements Cost {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    CostImpl(CostInner inner,  DevTestLabsManager manager) {
+        super(null, inner);
+        this.manager = manager;
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "costs");
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    protected Observable<CostInner> getInnerAsync() {
+        CostsInner client = this.manager().inner().costs();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+
+
+    @Override
+    public List<CostPerDayProperties> costs() {
+        return this.inner().costs();
+    }
+
+    @Override
+    public String currencyCode() {
+        return this.inner().currencyCode();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInner.java
new file mode 100644
index 000000000000..0b8451b9e92f
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInner.java
@@ -0,0 +1,74 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostPerDayProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A cost item.
+ */
+@JsonFlatten
+public class CostInner extends Resource {
+    /**
+     * The currency code of the cost.
+     */
+    @JsonProperty(value = "properties.currencyCode")
+    private String currencyCode;
+
+    /**
+     * The per-day costs items of the cost.
+     */
+    @JsonProperty(value = "properties.costs")
+    private List<CostPerDayProperties> costs;
+
+    /**
+     * Get the currency code of the cost.
+     *
+     * @return the currencyCode value
+     */
+    public String currencyCode() {
+        return this.currencyCode;
+    }
+
+    /**
+     * Set the currency code of the cost.
+     *
+     * @param currencyCode the currencyCode value to set
+     * @return the CostInner object itself.
+     */
+    public CostInner withCurrencyCode(String currencyCode) {
+        this.currencyCode = currencyCode;
+        return this;
+    }
+
+    /**
+     * Get the per-day costs items of the cost.
+     *
+     * @return the costs value
+     */
+    public List<CostPerDayProperties> costs() {
+        return this.costs;
+    }
+
+    /**
+     * Set the per-day costs items of the cost.
+     *
+     * @param costs the costs value to set
+     * @return the CostInner object itself.
+     */
+    public CostInner withCosts(List<CostPerDayProperties> costs) {
+        this.costs = costs;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightImpl.java
new file mode 100644
index 000000000000..fbb48bba8255
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightImpl.java
@@ -0,0 +1,86 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsight;
+import com.microsoft.azure.arm.model.implementation.IndexableRefreshableWrapperImpl;
+import rx.Observable;
+import java.util.Map;
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VMCostProperties;
+
+class CostInsightImpl extends IndexableRefreshableWrapperImpl<CostInsight, CostInsightInner> implements CostInsight {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    CostInsightImpl(CostInsightInner inner,  DevTestLabsManager manager) {
+        super(null, inner);
+        this.manager = manager;
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "costinsights");
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    protected Observable<CostInsightInner> getInnerAsync() {
+        CostInsightsInner client = this.manager().inner().costInsights();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+
+
+    @Override
+    public String currencyCode() {
+        return this.inner().currencyCode();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public List<VMCostProperties> vmCosts() {
+        return this.inner().vmCosts();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightInner.java
new file mode 100644
index 000000000000..f3c01151651e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightInner.java
@@ -0,0 +1,100 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VMCostProperties;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * The CostInsightInner model.
+ */
+@JsonFlatten
+public class CostInsightInner extends Resource {
+    /**
+     * The currencyCode property.
+     */
+    @JsonProperty(value = "properties.currencyCode")
+    private String currencyCode;
+
+    /**
+     * The vmCosts property.
+     */
+    @JsonProperty(value = "properties.vmCosts")
+    private List<VMCostProperties> vmCosts;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the currencyCode value.
+     *
+     * @return the currencyCode value
+     */
+    public String currencyCode() {
+        return this.currencyCode;
+    }
+
+    /**
+     * Set the currencyCode value.
+     *
+     * @param currencyCode the currencyCode value to set
+     * @return the CostInsightInner object itself.
+     */
+    public CostInsightInner withCurrencyCode(String currencyCode) {
+        this.currencyCode = currencyCode;
+        return this;
+    }
+
+    /**
+     * Get the vmCosts value.
+     *
+     * @return the vmCosts value
+     */
+    public List<VMCostProperties> vmCosts() {
+        return this.vmCosts;
+    }
+
+    /**
+     * Set the vmCosts value.
+     *
+     * @param vmCosts the vmCosts value to set
+     * @return the CostInsightInner object itself.
+     */
+    public CostInsightInner withVmCosts(List<VMCostProperties> vmCosts) {
+        this.vmCosts = vmCosts;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the CostInsightInner object itself.
+     */
+    public CostInsightInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightsImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightsImpl.java
new file mode 100644
index 000000000000..b121a19833a7
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightsImpl.java
@@ -0,0 +1,76 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import rx.Completable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsight;
+
+class CostInsightsImpl extends WrapperImpl<CostInsightsInner> implements CostInsights {
+    private final DevTestLabsManager manager;
+
+    CostInsightsImpl(DevTestLabsManager manager) {
+        super(manager.inner().costInsights());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    private CostInsightImpl wrapModel(CostInsightInner inner) {
+        return  new CostInsightImpl(inner, manager());
+    }
+
+    @Override
+    public Completable refreshDataAsync(String resourceGroupName, String labName, String name) {
+        CostInsightsInner client = this.inner();
+        return client.refreshDataAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+    @Override
+    public Observable<CostInsight> listAsync(final String resourceGroupName, final String labName) {
+        CostInsightsInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<CostInsightInner>, Iterable<CostInsightInner>>() {
+            @Override
+            public Iterable<CostInsightInner> call(Page<CostInsightInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<CostInsightInner, CostInsight>() {
+            @Override
+            public CostInsight call(CostInsightInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<CostInsight> getResourceAsync(String resourceGroupName, String labName, String name) {
+        CostInsightsInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<CostInsightInner, Observable<CostInsight>>() {
+            @Override
+            public Observable<CostInsight> call(CostInsightInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((CostInsight)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightsInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightsInner.java
new file mode 100644
index 000000000000..55bdef860f16
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostInsightsInner.java
@@ -0,0 +1,712 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in CostInsights.
+ */
+public class CostInsightsInner {
+    /** The Retrofit service to perform REST calls. */
+    private CostInsightsService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of CostInsightsInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public CostInsightsInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(CostInsightsService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for CostInsights to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface CostInsightsService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costinsights")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costinsights/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights refreshData" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costinsights/{name}/refreshData")
+        Observable<Response<ResponseBody>> refreshData(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights beginRefreshData" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costinsights/{name}/refreshData")
+        Observable<Response<ResponseBody>> beginRefreshData(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CostInsightInner&gt; object if successful.
+     */
+    public PagedList<CostInsightInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<CostInsightInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<CostInsightInner>(response.body()) {
+            @Override
+            public Page<CostInsightInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CostInsightInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<CostInsightInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInsightInner&gt; object
+     */
+    public Observable<Page<CostInsightInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<CostInsightInner>>, Page<CostInsightInner>>() {
+                @Override
+                public Page<CostInsightInner> call(ServiceResponse<Page<CostInsightInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInsightInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CostInsightInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<CostInsightInner>>, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(ServiceResponse<Page<CostInsightInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CostInsightInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CostInsightInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CostInsightInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CostInsightInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CostInsightInner&gt; object if successful.
+     */
+    public PagedList<CostInsightInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<CostInsightInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<CostInsightInner>(response.body()) {
+            @Override
+            public Page<CostInsightInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CostInsightInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<CostInsightInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInsightInner&gt; object
+     */
+    public Observable<Page<CostInsightInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<CostInsightInner>>, Page<CostInsightInner>>() {
+                @Override
+                public Page<CostInsightInner> call(ServiceResponse<Page<CostInsightInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInsightInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CostInsightInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<CostInsightInner>>, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(ServiceResponse<Page<CostInsightInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+    ServiceResponse<PageImpl<CostInsightInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<CostInsightInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<CostInsightInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<CostInsightInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<CostInsightInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CostInsightInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CostInsightInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CostInsightInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CostInsightInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<CostInsightInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<CostInsightInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<CostInsightInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get cost insight.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the CostInsightInner object if successful.
+     */
+    public CostInsightInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get cost insight.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<CostInsightInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<CostInsightInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get cost insight.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CostInsightInner object
+     */
+    public Observable<CostInsightInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<CostInsightInner>, CostInsightInner>() {
+            @Override
+            public CostInsightInner call(ServiceResponse<CostInsightInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get cost insight.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CostInsightInner object
+     */
+    public Observable<ServiceResponse<CostInsightInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<CostInsightInner>>>() {
+                @Override
+                public Observable<ServiceResponse<CostInsightInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<CostInsightInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<CostInsightInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<CostInsightInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<CostInsightInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void refreshData(String resourceGroupName, String labName, String name) {
+        refreshDataWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> refreshDataAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(refreshDataWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> refreshDataAsync(String resourceGroupName, String labName, String name) {
+        return refreshDataWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> refreshDataWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.refreshData(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginRefreshData(String resourceGroupName, String labName, String name) {
+        beginRefreshDataWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginRefreshDataAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginRefreshDataWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginRefreshDataAsync(String resourceGroupName, String labName, String name) {
+        return beginRefreshDataWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Refresh Lab's Cost Insight Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost insight.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginRefreshDataWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginRefreshData(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginRefreshDataDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginRefreshDataDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CostInsightInner&gt; object if successful.
+     */
+    public PagedList<CostInsightInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<CostInsightInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<CostInsightInner>(response.body()) {
+            @Override
+            public Page<CostInsightInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CostInsightInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<CostInsightInner>> serviceFuture, final ListOperationCallback<CostInsightInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInsightInner&gt; object
+     */
+    public Observable<Page<CostInsightInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<CostInsightInner>>, Page<CostInsightInner>>() {
+                @Override
+                public Page<CostInsightInner> call(ServiceResponse<Page<CostInsightInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInsightInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CostInsightInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<CostInsightInner>>, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(ServiceResponse<Page<CostInsightInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List cost insights.
+     *
+    ServiceResponse<PageImpl<CostInsightInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CostInsightInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CostInsightInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CostInsightInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInsightInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CostInsightInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CostInsightInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<CostInsightInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<CostInsightInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<CostInsightInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostsImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostsImpl.java
new file mode 100644
index 000000000000..8214741c579d
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostsImpl.java
@@ -0,0 +1,76 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import rx.Completable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Cost;
+
+class CostsImpl extends WrapperImpl<CostsInner> implements Costs {
+    private final DevTestLabsManager manager;
+
+    CostsImpl(DevTestLabsManager manager) {
+        super(manager.inner().costs());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    private CostImpl wrapModel(CostInner inner) {
+        return  new CostImpl(inner, manager());
+    }
+
+    @Override
+    public Completable refreshDataAsync(String resourceGroupName, String labName, String name) {
+        CostsInner client = this.inner();
+        return client.refreshDataAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+    @Override
+    public Observable<Cost> listAsync(final String resourceGroupName, final String labName) {
+        CostsInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<CostInner>, Iterable<CostInner>>() {
+            @Override
+            public Iterable<CostInner> call(Page<CostInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<CostInner, Cost>() {
+            @Override
+            public Cost call(CostInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<Cost> getResourceAsync(String resourceGroupName, String labName, String name) {
+        CostsInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<CostInner, Observable<Cost>>() {
+            @Override
+            public Observable<Cost> call(CostInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((Cost)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostsInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostsInner.java
new file mode 100644
index 000000000000..67074389e030
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CostsInner.java
@@ -0,0 +1,712 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in Costs.
+ */
+public class CostsInner {
+    /** The Retrofit service to perform REST calls. */
+    private CostsService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of CostsInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public CostsInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(CostsService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for Costs to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface CostsService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costs")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costs/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs refreshData" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costs/{name}/refreshData")
+        Observable<Response<ResponseBody>> refreshData(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs beginRefreshData" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/costs/{name}/refreshData")
+        Observable<Response<ResponseBody>> beginRefreshData(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CostInner&gt; object if successful.
+     */
+    public PagedList<CostInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<CostInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<CostInner>(response.body()) {
+            @Override
+            public Page<CostInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CostInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<CostInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInner&gt; object
+     */
+    public Observable<Page<CostInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<CostInner>>, Page<CostInner>>() {
+                @Override
+                public Page<CostInner> call(ServiceResponse<Page<CostInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CostInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<CostInner>>, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(ServiceResponse<Page<CostInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CostInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CostInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CostInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CostInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CostInner&gt; object if successful.
+     */
+    public PagedList<CostInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<CostInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<CostInner>(response.body()) {
+            @Override
+            public Page<CostInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CostInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<CostInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInner&gt; object
+     */
+    public Observable<Page<CostInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<CostInner>>, Page<CostInner>>() {
+                @Override
+                public Page<CostInner> call(ServiceResponse<Page<CostInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CostInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<CostInner>>, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(ServiceResponse<Page<CostInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+    ServiceResponse<PageImpl<CostInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<CostInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<CostInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<CostInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<CostInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CostInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CostInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CostInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CostInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<CostInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<CostInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<CostInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get cost.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the CostInner object if successful.
+     */
+    public CostInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get cost.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<CostInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<CostInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get cost.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CostInner object
+     */
+    public Observable<CostInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<CostInner>, CostInner>() {
+            @Override
+            public CostInner call(ServiceResponse<CostInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get cost.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CostInner object
+     */
+    public Observable<ServiceResponse<CostInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<CostInner>>>() {
+                @Override
+                public Observable<ServiceResponse<CostInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<CostInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<CostInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<CostInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<CostInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void refreshData(String resourceGroupName, String labName, String name) {
+        refreshDataWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> refreshDataAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(refreshDataWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> refreshDataAsync(String resourceGroupName, String labName, String name) {
+        return refreshDataWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> refreshDataWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.refreshData(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginRefreshData(String resourceGroupName, String labName, String name) {
+        beginRefreshDataWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginRefreshDataAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginRefreshDataWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginRefreshDataAsync(String resourceGroupName, String labName, String name) {
+        return beginRefreshDataWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Refresh Lab's Cost Data. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the cost.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginRefreshDataWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginRefreshData(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginRefreshDataDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginRefreshDataDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List costs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CostInner&gt; object if successful.
+     */
+    public PagedList<CostInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<CostInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<CostInner>(response.body()) {
+            @Override
+            public Page<CostInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List costs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CostInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<CostInner>> serviceFuture, final ListOperationCallback<CostInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List costs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInner&gt; object
+     */
+    public Observable<Page<CostInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<CostInner>>, Page<CostInner>>() {
+                @Override
+                public Page<CostInner> call(ServiceResponse<Page<CostInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CostInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CostInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<CostInner>>, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(ServiceResponse<Page<CostInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List costs.
+     *
+    ServiceResponse<PageImpl<CostInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CostInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CostInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CostInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CostInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CostInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CostInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<CostInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<CostInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<CostInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImageImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImageImpl.java
new file mode 100644
index 000000000000..fada6afbe96a
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImageImpl.java
@@ -0,0 +1,198 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImage;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImagePropertiesFromVm;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImagePropertiesCustom;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImageOsType;
+import org.joda.time.DateTime;
+import java.util.Map;
+
+class CustomImageImpl extends CreatableUpdatableImpl<CustomImage, CustomImageInner, CustomImageImpl> implements CustomImage, CustomImage.Definition, CustomImage.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    CustomImageImpl(String name, DevTestLabsManager manager) {
+        super(name, new CustomImageInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    CustomImageImpl(CustomImageInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "customimages");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<CustomImage> createResourceAsync() {
+        CustomImagesInner client = this.manager().inner().customImages();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<CustomImage> updateResourceAsync() {
+        CustomImagesInner client = this.manager().inner().customImages();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<CustomImageInner> getInnerAsync() {
+        CustomImagesInner client = this.manager().inner().customImages();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public String author() {
+        return this.inner().author();
+    }
+
+    @Override
+    public DateTime creationDate() {
+        return this.inner().creationDate();
+    }
+
+    @Override
+    public String description() {
+        return this.inner().description();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public CustomImageOsType osType() {
+        return this.inner().osType();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public CustomImagePropertiesCustom vhd() {
+        return this.inner().vhd();
+    }
+
+    @Override
+    public CustomImagePropertiesFromVm vm() {
+        return this.inner().vm();
+    }
+
+    @Override
+    public CustomImageImpl withExistingLab(String resourceGroupName, String labName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withAuthor(String author) {
+        this.inner().withAuthor(author);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withCreationDate(DateTime creationDate) {
+        this.inner().withCreationDate(creationDate);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withDescription(String description) {
+        this.inner().withDescription(description);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withOsType(CustomImageOsType osType) {
+        this.inner().withOsType(osType);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withVhd(CustomImagePropertiesCustom vhd) {
+        this.inner().withVhd(vhd);
+        return this;
+    }
+
+    @Override
+    public CustomImageImpl withVm(CustomImagePropertiesFromVm vm) {
+        this.inner().withVm(vm);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImageInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImageInner.java
new file mode 100644
index 000000000000..f3abd2c0f969
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImageInner.java
@@ -0,0 +1,207 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImagePropertiesFromVm;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImagePropertiesCustom;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImageOsType;
+import org.joda.time.DateTime;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A custom image.
+ */
+@JsonFlatten
+public class CustomImageInner extends Resource {
+    /**
+     * The vm property.
+     */
+    @JsonProperty(value = "properties.vm")
+    private CustomImagePropertiesFromVm vm;
+
+    /**
+     * The VHD from which the image is to be created.
+     */
+    @JsonProperty(value = "properties.vhd")
+    private CustomImagePropertiesCustom vhd;
+
+    /**
+     * The description of the custom image.
+     */
+    @JsonProperty(value = "properties.description")
+    private String description;
+
+    /**
+     * The OS type of the custom image. Possible values include: 'Windows',
+     * 'Linux', 'None'.
+     */
+    @JsonProperty(value = "properties.osType")
+    private CustomImageOsType osType;
+
+    /**
+     * The author of the custom image.
+     */
+    @JsonProperty(value = "properties.author")
+    private String author;
+
+    /**
+     * The creation date of the custom image.
+     */
+    @JsonProperty(value = "properties.creationDate")
+    private DateTime creationDate;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the vm value.
+     *
+     * @return the vm value
+     */
+    public CustomImagePropertiesFromVm vm() {
+        return this.vm;
+    }
+
+    /**
+     * Set the vm value.
+     *
+     * @param vm the vm value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withVm(CustomImagePropertiesFromVm vm) {
+        this.vm = vm;
+        return this;
+    }
+
+    /**
+     * Get the VHD from which the image is to be created.
+     *
+     * @return the vhd value
+     */
+    public CustomImagePropertiesCustom vhd() {
+        return this.vhd;
+    }
+
+    /**
+     * Set the VHD from which the image is to be created.
+     *
+     * @param vhd the vhd value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withVhd(CustomImagePropertiesCustom vhd) {
+        this.vhd = vhd;
+        return this;
+    }
+
+    /**
+     * Get the description of the custom image.
+     *
+     * @return the description value
+     */
+    public String description() {
+        return this.description;
+    }
+
+    /**
+     * Set the description of the custom image.
+     *
+     * @param description the description value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    /**
+     * Get the OS type of the custom image. Possible values include: 'Windows', 'Linux', 'None'.
+     *
+     * @return the osType value
+     */
+    public CustomImageOsType osType() {
+        return this.osType;
+    }
+
+    /**
+     * Set the OS type of the custom image. Possible values include: 'Windows', 'Linux', 'None'.
+     *
+     * @param osType the osType value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withOsType(CustomImageOsType osType) {
+        this.osType = osType;
+        return this;
+    }
+
+    /**
+     * Get the author of the custom image.
+     *
+     * @return the author value
+     */
+    public String author() {
+        return this.author;
+    }
+
+    /**
+     * Set the author of the custom image.
+     *
+     * @param author the author value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withAuthor(String author) {
+        this.author = author;
+        return this;
+    }
+
+    /**
+     * Get the creation date of the custom image.
+     *
+     * @return the creationDate value
+     */
+    public DateTime creationDate() {
+        return this.creationDate;
+    }
+
+    /**
+     * Set the creation date of the custom image.
+     *
+     * @param creationDate the creationDate value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withCreationDate(DateTime creationDate) {
+        this.creationDate = creationDate;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the CustomImageInner object itself.
+     */
+    public CustomImageInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImagesImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImagesImpl.java
new file mode 100644
index 000000000000..fd574b8a830e
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImagesImpl.java
@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImage;
+
+class CustomImagesImpl extends WrapperImpl<CustomImagesInner> implements CustomImages {
+    private final DevTestLabsManager manager;
+
+    CustomImagesImpl(DevTestLabsManager manager) {
+        super(manager.inner().customImages());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public CustomImageImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private CustomImageImpl wrapModel(CustomImageInner inner) {
+        return  new CustomImageImpl(inner, manager());
+    }
+
+    private CustomImageImpl wrapModel(String name) {
+        return new CustomImageImpl(name, this.manager());
+    }
+
+    @Override
+    public Observable<CustomImage> listAsync(final String resourceGroupName, final String labName) {
+        CustomImagesInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<CustomImageInner>, Iterable<CustomImageInner>>() {
+            @Override
+            public Iterable<CustomImageInner> call(Page<CustomImageInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<CustomImageInner, CustomImage>() {
+            @Override
+            public CustomImage call(CustomImageInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<CustomImage> getResourceAsync(String resourceGroupName, String labName, String name) {
+        CustomImagesInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<CustomImageInner, Observable<CustomImage>>() {
+            @Override
+            public Observable<CustomImage> call(CustomImageInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((CustomImage)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        CustomImagesInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImagesInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImagesInner.java
new file mode 100644
index 000000000000..3bf51d317aa7
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/CustomImagesInner.java
@@ -0,0 +1,909 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.Path;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in CustomImages.
+ */
+public class CustomImagesInner {
+    /** The Retrofit service to perform REST calls. */
+    private CustomImagesService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of CustomImagesInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public CustomImagesInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(CustomImagesService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for CustomImages to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface CustomImagesService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/customimages")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/customimages/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/customimages/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body CustomImageInner customImage, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages beginCreateOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/customimages/{name}")
+        Observable<Response<ResponseBody>> beginCreateOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body CustomImageInner customImage, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/customimages/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages beginDeleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/customimages/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> beginDeleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CustomImageInner&gt; object if successful.
+     */
+    public PagedList<CustomImageInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<CustomImageInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<CustomImageInner>(response.body()) {
+            @Override
+            public Page<CustomImageInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CustomImageInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<CustomImageInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CustomImageInner&gt; object
+     */
+    public Observable<Page<CustomImageInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<CustomImageInner>>, Page<CustomImageInner>>() {
+                @Override
+                public Page<CustomImageInner> call(ServiceResponse<Page<CustomImageInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CustomImageInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CustomImageInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<CustomImageInner>>, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(ServiceResponse<Page<CustomImageInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CustomImageInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CustomImageInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CustomImageInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CustomImageInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CustomImageInner&gt; object if successful.
+     */
+    public PagedList<CustomImageInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<CustomImageInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<CustomImageInner>(response.body()) {
+            @Override
+            public Page<CustomImageInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CustomImageInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<CustomImageInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CustomImageInner&gt; object
+     */
+    public Observable<Page<CustomImageInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<CustomImageInner>>, Page<CustomImageInner>>() {
+                @Override
+                public Page<CustomImageInner> call(ServiceResponse<Page<CustomImageInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CustomImageInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CustomImageInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<CustomImageInner>>, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(ServiceResponse<Page<CustomImageInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+    ServiceResponse<PageImpl<CustomImageInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<CustomImageInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<CustomImageInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<CustomImageInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<CustomImageInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CustomImageInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CustomImageInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CustomImageInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CustomImageInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<CustomImageInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<CustomImageInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<CustomImageInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get custom image.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the CustomImageInner object if successful.
+     */
+    public CustomImageInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get custom image.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<CustomImageInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<CustomImageInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get custom image.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CustomImageInner object
+     */
+    public Observable<CustomImageInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<CustomImageInner>, CustomImageInner>() {
+            @Override
+            public CustomImageInner call(ServiceResponse<CustomImageInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get custom image.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CustomImageInner object
+     */
+    public Observable<ServiceResponse<CustomImageInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<CustomImageInner>>>() {
+                @Override
+                public Observable<ServiceResponse<CustomImageInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<CustomImageInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<CustomImageInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<CustomImageInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<CustomImageInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the CustomImageInner object if successful.
+     */
+    public CustomImageInner createOrUpdateResource(String resourceGroupName, String labName, String name, CustomImageInner customImage) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, customImage).toBlocking().last().body();
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<CustomImageInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, CustomImageInner customImage, final ServiceCallback<CustomImageInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, customImage), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<CustomImageInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, CustomImageInner customImage) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, customImage).map(new Func1<ServiceResponse<CustomImageInner>, CustomImageInner>() {
+            @Override
+            public CustomImageInner call(ServiceResponse<CustomImageInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<CustomImageInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, CustomImageInner customImage) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (customImage == null) {
+            throw new IllegalArgumentException("Parameter customImage is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(customImage);
+        Observable<Response<ResponseBody>> observable = service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, customImage, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPutOrPatchResultAsync(observable, new TypeToken<CustomImageInner>() { }.getType());
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the CustomImageInner object if successful.
+     */
+    public CustomImageInner beginCreateOrUpdateResource(String resourceGroupName, String labName, String name, CustomImageInner customImage) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, customImage).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<CustomImageInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, CustomImageInner customImage, final ServiceCallback<CustomImageInner> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, customImage), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CustomImageInner object
+     */
+    public Observable<CustomImageInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, CustomImageInner customImage) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, customImage).map(new Func1<ServiceResponse<CustomImageInner>, CustomImageInner>() {
+            @Override
+            public CustomImageInner call(ServiceResponse<CustomImageInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param customImage the CustomImageInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the CustomImageInner object
+     */
+    public Observable<ServiceResponse<CustomImageInner>> beginCreateOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, CustomImageInner customImage) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (customImage == null) {
+            throw new IllegalArgumentException("Parameter customImage is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(customImage);
+        return service.beginCreateOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, customImage, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<CustomImageInner>>>() {
+                @Override
+                public Observable<ServiceResponse<CustomImageInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<CustomImageInner> clientResponse = beginCreateOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<CustomImageInner> beginCreateOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<CustomImageInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<CustomImageInner>() { }.getType())
+                .register(201, new TypeToken<CustomImageInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginDeleteResource(String resourceGroupName, String labName, String name) {
+        beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete custom image. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the custom image.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginDeleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginDeleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginDeleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginDeleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;CustomImageInner&gt; object if successful.
+     */
+    public PagedList<CustomImageInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<CustomImageInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<CustomImageInner>(response.body()) {
+            @Override
+            public Page<CustomImageInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<CustomImageInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<CustomImageInner>> serviceFuture, final ListOperationCallback<CustomImageInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CustomImageInner&gt; object
+     */
+    public Observable<Page<CustomImageInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<CustomImageInner>>, Page<CustomImageInner>>() {
+                @Override
+                public Page<CustomImageInner> call(ServiceResponse<Page<CustomImageInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;CustomImageInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<CustomImageInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<CustomImageInner>>, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(ServiceResponse<Page<CustomImageInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List custom images.
+     *
+    ServiceResponse<PageImpl<CustomImageInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;CustomImageInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<CustomImageInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<CustomImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<CustomImageInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<CustomImageInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<CustomImageInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<CustomImageInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<CustomImageInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<CustomImageInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/DevTestLabsClientImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/DevTestLabsClientImpl.java
new file mode 100644
index 000000000000..b00a9ea4f6f7
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/DevTestLabsClientImpl.java
@@ -0,0 +1,364 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.AzureClient;
+import com.microsoft.azure.AzureServiceClient;
+import com.microsoft.rest.credentials.ServiceClientCredentials;
+import com.microsoft.rest.RestClient;
+
+/**
+ * Initializes a new instance of the DevTestLabsClientImpl class.
+ */
+public class DevTestLabsClientImpl extends AzureServiceClient {
+    /** the {@link AzureClient} used for long running operations. */
+    private AzureClient azureClient;
+
+    /**
+     * Gets the {@link AzureClient} used for long running operations.
+     * @return the azure client;
+     */
+    public AzureClient getAzureClient() {
+        return this.azureClient;
+    }
+
+    /** Client API version. */
+    private String apiVersion;
+
+    /**
+     * Gets Client API version.
+     *
+     * @return the apiVersion value.
+     */
+    public String apiVersion() {
+        return this.apiVersion;
+    }
+
+    /** The subscription ID. */
+    private String subscriptionId;
+
+    /**
+     * Gets The subscription ID.
+     *
+     * @return the subscriptionId value.
+     */
+    public String subscriptionId() {
+        return this.subscriptionId;
+    }
+
+    /**
+     * Sets The subscription ID.
+     *
+     * @param subscriptionId the subscriptionId value.
+     * @return the service client itself
+     */
+    public DevTestLabsClientImpl withSubscriptionId(String subscriptionId) {
+        this.subscriptionId = subscriptionId;
+        return this;
+    }
+
+    /** The preferred language for the response. */
+    private String acceptLanguage;
+
+    /**
+     * Gets The preferred language for the response.
+     *
+     * @return the acceptLanguage value.
+     */
+    public String acceptLanguage() {
+        return this.acceptLanguage;
+    }
+
+    /**
+     * Sets The preferred language for the response.
+     *
+     * @param acceptLanguage the acceptLanguage value.
+     * @return the service client itself
+     */
+    public DevTestLabsClientImpl withAcceptLanguage(String acceptLanguage) {
+        this.acceptLanguage = acceptLanguage;
+        return this;
+    }
+
+    /** The retry timeout in seconds for Long Running Operations. Default value is 30. */
+    private int longRunningOperationRetryTimeout;
+
+    /**
+     * Gets The retry timeout in seconds for Long Running Operations. Default value is 30.
+     *
+     * @return the longRunningOperationRetryTimeout value.
+     */
+    public int longRunningOperationRetryTimeout() {
+        return this.longRunningOperationRetryTimeout;
+    }
+
+    /**
+     * Sets The retry timeout in seconds for Long Running Operations. Default value is 30.
+     *
+     * @param longRunningOperationRetryTimeout the longRunningOperationRetryTimeout value.
+     * @return the service client itself
+     */
+    public DevTestLabsClientImpl withLongRunningOperationRetryTimeout(int longRunningOperationRetryTimeout) {
+        this.longRunningOperationRetryTimeout = longRunningOperationRetryTimeout;
+        return this;
+    }
+
+    /** Whether a unique x-ms-client-request-id should be generated. When set to true a unique x-ms-client-request-id value is generated and included in each request. Default is true. */
+    private boolean generateClientRequestId;
+
+    /**
+     * Gets Whether a unique x-ms-client-request-id should be generated. When set to true a unique x-ms-client-request-id value is generated and included in each request. Default is true.
+     *
+     * @return the generateClientRequestId value.
+     */
+    public boolean generateClientRequestId() {
+        return this.generateClientRequestId;
+    }
+
+    /**
+     * Sets Whether a unique x-ms-client-request-id should be generated. When set to true a unique x-ms-client-request-id value is generated and included in each request. Default is true.
+     *
+     * @param generateClientRequestId the generateClientRequestId value.
+     * @return the service client itself
+     */
+    public DevTestLabsClientImpl withGenerateClientRequestId(boolean generateClientRequestId) {
+        this.generateClientRequestId = generateClientRequestId;
+        return this;
+    }
+
+    /**
+     * The LabsInner object to access its operations.
+     */
+    private LabsInner labs;
+
+    /**
+     * Gets the LabsInner object to access its operations.
+     * @return the LabsInner object.
+     */
+    public LabsInner labs() {
+        return this.labs;
+    }
+
+    /**
+     * The ArtifactSourcesInner object to access its operations.
+     */
+    private ArtifactSourcesInner artifactSources;
+
+    /**
+     * Gets the ArtifactSourcesInner object to access its operations.
+     * @return the ArtifactSourcesInner object.
+     */
+    public ArtifactSourcesInner artifactSources() {
+        return this.artifactSources;
+    }
+
+    /**
+     * The ArtifactsInner object to access its operations.
+     */
+    private ArtifactsInner artifacts;
+
+    /**
+     * Gets the ArtifactsInner object to access its operations.
+     * @return the ArtifactsInner object.
+     */
+    public ArtifactsInner artifacts() {
+        return this.artifacts;
+    }
+
+    /**
+     * The CostInsightsInner object to access its operations.
+     */
+    private CostInsightsInner costInsights;
+
+    /**
+     * Gets the CostInsightsInner object to access its operations.
+     * @return the CostInsightsInner object.
+     */
+    public CostInsightsInner costInsights() {
+        return this.costInsights;
+    }
+
+    /**
+     * The CostsInner object to access its operations.
+     */
+    private CostsInner costs;
+
+    /**
+     * Gets the CostsInner object to access its operations.
+     * @return the CostsInner object.
+     */
+    public CostsInner costs() {
+        return this.costs;
+    }
+
+    /**
+     * The CustomImagesInner object to access its operations.
+     */
+    private CustomImagesInner customImages;
+
+    /**
+     * Gets the CustomImagesInner object to access its operations.
+     * @return the CustomImagesInner object.
+     */
+    public CustomImagesInner customImages() {
+        return this.customImages;
+    }
+
+    /**
+     * The FormulasInner object to access its operations.
+     */
+    private FormulasInner formulas;
+
+    /**
+     * Gets the FormulasInner object to access its operations.
+     * @return the FormulasInner object.
+     */
+    public FormulasInner formulas() {
+        return this.formulas;
+    }
+
+    /**
+     * The GalleryImagesInner object to access its operations.
+     */
+    private GalleryImagesInner galleryImages;
+
+    /**
+     * Gets the GalleryImagesInner object to access its operations.
+     * @return the GalleryImagesInner object.
+     */
+    public GalleryImagesInner galleryImages() {
+        return this.galleryImages;
+    }
+
+    /**
+     * The PolicySetsInner object to access its operations.
+     */
+    private PolicySetsInner policySets;
+
+    /**
+     * Gets the PolicySetsInner object to access its operations.
+     * @return the PolicySetsInner object.
+     */
+    public PolicySetsInner policySets() {
+        return this.policySets;
+    }
+
+    /**
+     * The PolicysInner object to access its operations.
+     */
+    private PolicysInner policys;
+
+    /**
+     * Gets the PolicysInner object to access its operations.
+     * @return the PolicysInner object.
+     */
+    public PolicysInner policys() {
+        return this.policys;
+    }
+
+    /**
+     * The SchedulesInner object to access its operations.
+     */
+    private SchedulesInner schedules;
+
+    /**
+     * Gets the SchedulesInner object to access its operations.
+     * @return the SchedulesInner object.
+     */
+    public SchedulesInner schedules() {
+        return this.schedules;
+    }
+
+    /**
+     * The VirtualMachinesInner object to access its operations.
+     */
+    private VirtualMachinesInner virtualMachines;
+
+    /**
+     * Gets the VirtualMachinesInner object to access its operations.
+     * @return the VirtualMachinesInner object.
+     */
+    public VirtualMachinesInner virtualMachines() {
+        return this.virtualMachines;
+    }
+
+    /**
+     * The VirtualNetworksInner object to access its operations.
+     */
+    private VirtualNetworksInner virtualNetworks;
+
+    /**
+     * Gets the VirtualNetworksInner object to access its operations.
+     * @return the VirtualNetworksInner object.
+     */
+    public VirtualNetworksInner virtualNetworks() {
+        return this.virtualNetworks;
+    }
+
+    /**
+     * Initializes an instance of DevTestLabsClient client.
+     *
+     * @param credentials the management credentials for Azure
+     */
+    public DevTestLabsClientImpl(ServiceClientCredentials credentials) {
+        this("https://management.azure.com", credentials);
+    }
+
+    /**
+     * Initializes an instance of DevTestLabsClient client.
+     *
+     * @param baseUrl the base URL of the host
+     * @param credentials the management credentials for Azure
+     */
+    public DevTestLabsClientImpl(String baseUrl, ServiceClientCredentials credentials) {
+        super(baseUrl, credentials);
+        initialize();
+    }
+
+    /**
+     * Initializes an instance of DevTestLabsClient client.
+     *
+     * @param restClient the REST client to connect to Azure.
+     */
+    public DevTestLabsClientImpl(RestClient restClient) {
+        super(restClient);
+        initialize();
+    }
+
+    protected void initialize() {
+        this.apiVersion = "2015-05-21-preview";
+        this.acceptLanguage = "en-US";
+        this.longRunningOperationRetryTimeout = 30;
+        this.generateClientRequestId = true;
+        this.labs = new LabsInner(restClient().retrofit(), this);
+        this.artifactSources = new ArtifactSourcesInner(restClient().retrofit(), this);
+        this.artifacts = new ArtifactsInner(restClient().retrofit(), this);
+        this.costInsights = new CostInsightsInner(restClient().retrofit(), this);
+        this.costs = new CostsInner(restClient().retrofit(), this);
+        this.customImages = new CustomImagesInner(restClient().retrofit(), this);
+        this.formulas = new FormulasInner(restClient().retrofit(), this);
+        this.galleryImages = new GalleryImagesInner(restClient().retrofit(), this);
+        this.policySets = new PolicySetsInner(restClient().retrofit(), this);
+        this.policys = new PolicysInner(restClient().retrofit(), this);
+        this.schedules = new SchedulesInner(restClient().retrofit(), this);
+        this.virtualMachines = new VirtualMachinesInner(restClient().retrofit(), this);
+        this.virtualNetworks = new VirtualNetworksInner(restClient().retrofit(), this);
+        this.azureClient = new AzureClient(this);
+    }
+
+    /**
+     * Gets the User-Agent header for the client.
+     *
+     * @return the user agent string.
+     */
+    @Override
+    public String userAgent() {
+        return String.format("%s (%s, %s, auto-generated)", super.userAgent(), "DevTestLabsClient", "2015-05-21-preview");
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/DevTestLabsManager.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/DevTestLabsManager.java
new file mode 100644
index 000000000000..816f7f788cd5
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/DevTestLabsManager.java
@@ -0,0 +1,243 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.AzureEnvironment;
+import com.microsoft.azure.AzureResponseBuilder;
+import com.microsoft.azure.credentials.AzureTokenCredentials;
+import com.microsoft.azure.management.apigeneration.Beta;
+import com.microsoft.azure.management.apigeneration.Beta.SinceVersion;
+import com.microsoft.azure.arm.resources.AzureConfigurable;
+import com.microsoft.azure.serializer.AzureJacksonAdapter;
+import com.microsoft.rest.RestClient;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactSources;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Artifacts;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CostInsights;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Costs;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.CustomImages;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImages;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicySets;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks;
+import com.microsoft.azure.arm.resources.implementation.AzureConfigurableCoreImpl;
+import com.microsoft.azure.arm.resources.implementation.ManagerCore;
+
+/**
+ * Entry point to Azure DevTestLabs resource management.
+ */
+public final class DevTestLabsManager extends ManagerCore<DevTestLabsManager, DevTestLabsClientImpl> {
+    private Labs labs;
+    private ArtifactSources artifactSources;
+    private Artifacts artifacts;
+    private CostInsights costInsights;
+    private Costs costs;
+    private CustomImages customImages;
+    private Formulas formulas;
+    private GalleryImages galleryImages;
+    private PolicySets policySets;
+    private Policys policys;
+    private Schedules schedules;
+    private VirtualMachines virtualMachines;
+    private VirtualNetworks virtualNetworks;
+    /**
+    * Get a Configurable instance that can be used to create DevTestLabsManager with optional configuration.
+    *
+    * @return the instance allowing configurations
+    */
+    public static Configurable configure() {
+        return new DevTestLabsManager.ConfigurableImpl();
+    }
+    /**
+    * Creates an instance of DevTestLabsManager that exposes DevTestLabs resource management API entry points.
+    *
+    * @param credentials the credentials to use
+    * @param subscriptionId the subscription UUID
+    * @return the DevTestLabsManager
+    */
+    public static DevTestLabsManager authenticate(AzureTokenCredentials credentials, String subscriptionId) {
+        return new DevTestLabsManager(new RestClient.Builder()
+            .withBaseUrl(credentials.environment(), AzureEnvironment.Endpoint.RESOURCE_MANAGER)
+            .withCredentials(credentials)
+            .withSerializerAdapter(new AzureJacksonAdapter())
+            .withResponseBuilderFactory(new AzureResponseBuilder.Factory())
+            .build(), subscriptionId);
+    }
+    /**
+    * Creates an instance of DevTestLabsManager that exposes DevTestLabs resource management API entry points.
+    *
+    * @param restClient the RestClient to be used for API calls.
+    * @param subscriptionId the subscription UUID
+    * @return the DevTestLabsManager
+    */
+    public static DevTestLabsManager authenticate(RestClient restClient, String subscriptionId) {
+        return new DevTestLabsManager(restClient, subscriptionId);
+    }
+    /**
+    * The interface allowing configurations to be set.
+    */
+    public interface Configurable extends AzureConfigurable<Configurable> {
+        /**
+        * Creates an instance of DevTestLabsManager that exposes DevTestLabs management API entry points.
+        *
+        * @param credentials the credentials to use
+        * @param subscriptionId the subscription UUID
+        * @return the interface exposing DevTestLabs management API entry points that work across subscriptions
+        */
+        DevTestLabsManager authenticate(AzureTokenCredentials credentials, String subscriptionId);
+    }
+
+    /**
+     * @return Entry point to manage Labs.
+     */
+    public Labs labs() {
+        if (this.labs == null) {
+            this.labs = new LabsImpl(this);
+        }
+        return this.labs;
+    }
+
+    /**
+     * @return Entry point to manage ArtifactSources.
+     */
+    public ArtifactSources artifactSources() {
+        if (this.artifactSources == null) {
+            this.artifactSources = new ArtifactSourcesImpl(this);
+        }
+        return this.artifactSources;
+    }
+
+    /**
+     * @return Entry point to manage Artifacts.
+     */
+    public Artifacts artifacts() {
+        if (this.artifacts == null) {
+            this.artifacts = new ArtifactsImpl(this);
+        }
+        return this.artifacts;
+    }
+
+    /**
+     * @return Entry point to manage CostInsights.
+     */
+    public CostInsights costInsights() {
+        if (this.costInsights == null) {
+            this.costInsights = new CostInsightsImpl(this);
+        }
+        return this.costInsights;
+    }
+
+    /**
+     * @return Entry point to manage Costs.
+     */
+    public Costs costs() {
+        if (this.costs == null) {
+            this.costs = new CostsImpl(this);
+        }
+        return this.costs;
+    }
+
+    /**
+     * @return Entry point to manage CustomImages.
+     */
+    public CustomImages customImages() {
+        if (this.customImages == null) {
+            this.customImages = new CustomImagesImpl(this);
+        }
+        return this.customImages;
+    }
+
+    /**
+     * @return Entry point to manage Formulas.
+     */
+    public Formulas formulas() {
+        if (this.formulas == null) {
+            this.formulas = new FormulasImpl(this);
+        }
+        return this.formulas;
+    }
+
+    /**
+     * @return Entry point to manage GalleryImages.
+     */
+    public GalleryImages galleryImages() {
+        if (this.galleryImages == null) {
+            this.galleryImages = new GalleryImagesImpl(this);
+        }
+        return this.galleryImages;
+    }
+
+    /**
+     * @return Entry point to manage PolicySets.
+     */
+    public PolicySets policySets() {
+        if (this.policySets == null) {
+            this.policySets = new PolicySetsImpl(this);
+        }
+        return this.policySets;
+    }
+
+    /**
+     * @return Entry point to manage Policys.
+     */
+    public Policys policys() {
+        if (this.policys == null) {
+            this.policys = new PolicysImpl(this);
+        }
+        return this.policys;
+    }
+
+    /**
+     * @return Entry point to manage Schedules.
+     */
+    public Schedules schedules() {
+        if (this.schedules == null) {
+            this.schedules = new SchedulesImpl(this);
+        }
+        return this.schedules;
+    }
+
+    /**
+     * @return Entry point to manage VirtualMachines.
+     */
+    public VirtualMachines virtualMachines() {
+        if (this.virtualMachines == null) {
+            this.virtualMachines = new VirtualMachinesImpl(this);
+        }
+        return this.virtualMachines;
+    }
+
+    /**
+     * @return Entry point to manage VirtualNetworks.
+     */
+    public VirtualNetworks virtualNetworks() {
+        if (this.virtualNetworks == null) {
+            this.virtualNetworks = new VirtualNetworksImpl(this);
+        }
+        return this.virtualNetworks;
+    }
+
+    /**
+    * The implementation for Configurable interface.
+    */
+    private static final class ConfigurableImpl extends AzureConfigurableCoreImpl<Configurable> implements Configurable {
+        public DevTestLabsManager authenticate(AzureTokenCredentials credentials, String subscriptionId) {
+           return DevTestLabsManager.authenticate(buildRestClient(credentials), subscriptionId);
+        }
+     }
+    private DevTestLabsManager(RestClient restClient, String subscriptionId) {
+        super(
+            restClient,
+            subscriptionId,
+            new DevTestLabsClientImpl(restClient).withSubscriptionId(subscriptionId));
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/EvaluatePoliciesResponseImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/EvaluatePoliciesResponseImpl.java
new file mode 100644
index 000000000000..fda4a5f9b337
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/EvaluatePoliciesResponseImpl.java
@@ -0,0 +1,33 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EvaluatePoliciesResponse;
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicySetResult;
+
+class EvaluatePoliciesResponseImpl extends WrapperImpl<EvaluatePoliciesResponseInner> implements EvaluatePoliciesResponse {
+    private final DevTestLabsManager manager;
+    EvaluatePoliciesResponseImpl(EvaluatePoliciesResponseInner inner, DevTestLabsManager manager) {
+        super(inner);
+        this.manager = manager;
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public List<PolicySetResult> results() {
+        return this.inner().results();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/EvaluatePoliciesResponseInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/EvaluatePoliciesResponseInner.java
new file mode 100644
index 000000000000..425481c8f289
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/EvaluatePoliciesResponseInner.java
@@ -0,0 +1,45 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicySetResult;
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Response body for evaluating a policy set.
+ */
+public class EvaluatePoliciesResponseInner {
+    /**
+     * Results of evaluating a policy set.
+     */
+    @JsonProperty(value = "results")
+    private List<PolicySetResult> results;
+
+    /**
+     * Get results of evaluating a policy set.
+     *
+     * @return the results value
+     */
+    public List<PolicySetResult> results() {
+        return this.results;
+    }
+
+    /**
+     * Set results of evaluating a policy set.
+     *
+     * @param results the results value to set
+     * @return the EvaluatePoliciesResponseInner object itself.
+     */
+    public EvaluatePoliciesResponseInner withResults(List<PolicySetResult> results) {
+        this.results = results;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulaImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulaImpl.java
new file mode 100644
index 000000000000..a55ea4c58d19
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulaImpl.java
@@ -0,0 +1,202 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formula;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import org.joda.time.DateTime;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.FormulaPropertiesFromVm;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabVirtualMachine;
+import java.util.Map;
+
+class FormulaImpl extends CreatableUpdatableImpl<Formula, FormulaInner, FormulaImpl> implements Formula, Formula.Definition, Formula.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    FormulaImpl(String name, DevTestLabsManager manager) {
+        super(name, new FormulaInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    FormulaImpl(FormulaInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "formulas");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<Formula> createResourceAsync() {
+        FormulasInner client = this.manager().inner().formulas();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<Formula> updateResourceAsync() {
+        FormulasInner client = this.manager().inner().formulas();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<FormulaInner> getInnerAsync() {
+        FormulasInner client = this.manager().inner().formulas();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public String author() {
+        return this.inner().author();
+    }
+
+    @Override
+    public DateTime creationDate() {
+        return this.inner().creationDate();
+    }
+
+    @Override
+    public String description() {
+        return this.inner().description();
+    }
+
+    @Override
+    public LabVirtualMachine formulaContent() {
+        LabVirtualMachineInner inner = this.inner().formulaContent();
+        if (inner != null) {
+            return  new LabVirtualMachineImpl(inner, manager());
+        } else {
+            return null;
+        }
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String osType() {
+        return this.inner().osType();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public FormulaPropertiesFromVm vm() {
+        return this.inner().vm();
+    }
+
+    @Override
+    public FormulaImpl withExistingLab(String resourceGroupName, String labName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withAuthor(String author) {
+        this.inner().withAuthor(author);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withCreationDate(DateTime creationDate) {
+        this.inner().withCreationDate(creationDate);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withDescription(String description) {
+        this.inner().withDescription(description);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withFormulaContent(LabVirtualMachineInner formulaContent) {
+        this.inner().withFormulaContent(formulaContent);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withOsType(String osType) {
+        this.inner().withOsType(osType);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+    @Override
+    public FormulaImpl withVm(FormulaPropertiesFromVm vm) {
+        this.inner().withVm(vm);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulaInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulaInner.java
new file mode 100644
index 000000000000..da3361af3cde
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulaInner.java
@@ -0,0 +1,204 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import org.joda.time.DateTime;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.FormulaPropertiesFromVm;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A formula.
+ */
+@JsonFlatten
+public class FormulaInner extends Resource {
+    /**
+     * The description of the formula.
+     */
+    @JsonProperty(value = "properties.description")
+    private String description;
+
+    /**
+     * The author of the formula.
+     */
+    @JsonProperty(value = "properties.author")
+    private String author;
+
+    /**
+     * The OS type of the formula.
+     */
+    @JsonProperty(value = "properties.osType")
+    private String osType;
+
+    /**
+     * The creation date of the formula.
+     */
+    @JsonProperty(value = "properties.creationDate")
+    private DateTime creationDate;
+
+    /**
+     * The content of the formula.
+     */
+    @JsonProperty(value = "properties.formulaContent")
+    private LabVirtualMachineInner formulaContent;
+
+    /**
+     * Information about a VM from which a formula is to be created.
+     */
+    @JsonProperty(value = "properties.vm")
+    private FormulaPropertiesFromVm vm;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the description of the formula.
+     *
+     * @return the description value
+     */
+    public String description() {
+        return this.description;
+    }
+
+    /**
+     * Set the description of the formula.
+     *
+     * @param description the description value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    /**
+     * Get the author of the formula.
+     *
+     * @return the author value
+     */
+    public String author() {
+        return this.author;
+    }
+
+    /**
+     * Set the author of the formula.
+     *
+     * @param author the author value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withAuthor(String author) {
+        this.author = author;
+        return this;
+    }
+
+    /**
+     * Get the OS type of the formula.
+     *
+     * @return the osType value
+     */
+    public String osType() {
+        return this.osType;
+    }
+
+    /**
+     * Set the OS type of the formula.
+     *
+     * @param osType the osType value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withOsType(String osType) {
+        this.osType = osType;
+        return this;
+    }
+
+    /**
+     * Get the creation date of the formula.
+     *
+     * @return the creationDate value
+     */
+    public DateTime creationDate() {
+        return this.creationDate;
+    }
+
+    /**
+     * Set the creation date of the formula.
+     *
+     * @param creationDate the creationDate value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withCreationDate(DateTime creationDate) {
+        this.creationDate = creationDate;
+        return this;
+    }
+
+    /**
+     * Get the content of the formula.
+     *
+     * @return the formulaContent value
+     */
+    public LabVirtualMachineInner formulaContent() {
+        return this.formulaContent;
+    }
+
+    /**
+     * Set the content of the formula.
+     *
+     * @param formulaContent the formulaContent value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withFormulaContent(LabVirtualMachineInner formulaContent) {
+        this.formulaContent = formulaContent;
+        return this;
+    }
+
+    /**
+     * Get information about a VM from which a formula is to be created.
+     *
+     * @return the vm value
+     */
+    public FormulaPropertiesFromVm vm() {
+        return this.vm;
+    }
+
+    /**
+     * Set information about a VM from which a formula is to be created.
+     *
+     * @param vm the vm value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withVm(FormulaPropertiesFromVm vm) {
+        this.vm = vm;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the FormulaInner object itself.
+     */
+    public FormulaInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulasImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulasImpl.java
new file mode 100644
index 000000000000..1214be3502a0
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulasImpl.java
@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formula;
+
+class FormulasImpl extends WrapperImpl<FormulasInner> implements Formulas {
+    private final DevTestLabsManager manager;
+
+    FormulasImpl(DevTestLabsManager manager) {
+        super(manager.inner().formulas());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public FormulaImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private FormulaImpl wrapModel(FormulaInner inner) {
+        return  new FormulaImpl(inner, manager());
+    }
+
+    private FormulaImpl wrapModel(String name) {
+        return new FormulaImpl(name, this.manager());
+    }
+
+    @Override
+    public Observable<Formula> listAsync(final String resourceGroupName, final String labName) {
+        FormulasInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<FormulaInner>, Iterable<FormulaInner>>() {
+            @Override
+            public Iterable<FormulaInner> call(Page<FormulaInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<FormulaInner, Formula>() {
+            @Override
+            public Formula call(FormulaInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<Formula> getResourceAsync(String resourceGroupName, String labName, String name) {
+        FormulasInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<FormulaInner, Observable<Formula>>() {
+            @Override
+            public Observable<Formula> call(FormulaInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((Formula)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        FormulasInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulasInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulasInner.java
new file mode 100644
index 000000000000..1bcf7e27c008
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/FormulasInner.java
@@ -0,0 +1,830 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.Path;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in Formulas.
+ */
+public class FormulasInner {
+    /** The Retrofit service to perform REST calls. */
+    private FormulasService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of FormulasInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public FormulasInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(FormulasService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for Formulas to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface FormulasService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/formulas")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/formulas/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/formulas/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body FormulaInner formula, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas beginCreateOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/formulas/{name}")
+        Observable<Response<ResponseBody>> beginCreateOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body FormulaInner formula, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/formulas/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Formulas listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;FormulaInner&gt; object if successful.
+     */
+    public PagedList<FormulaInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<FormulaInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<FormulaInner>(response.body()) {
+            @Override
+            public Page<FormulaInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<FormulaInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<FormulaInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;FormulaInner&gt; object
+     */
+    public Observable<Page<FormulaInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<FormulaInner>>, Page<FormulaInner>>() {
+                @Override
+                public Page<FormulaInner> call(ServiceResponse<Page<FormulaInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;FormulaInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<FormulaInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<FormulaInner>>, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(ServiceResponse<Page<FormulaInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;FormulaInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<FormulaInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<FormulaInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<FormulaInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;FormulaInner&gt; object if successful.
+     */
+    public PagedList<FormulaInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<FormulaInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<FormulaInner>(response.body()) {
+            @Override
+            public Page<FormulaInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<FormulaInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<FormulaInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;FormulaInner&gt; object
+     */
+    public Observable<Page<FormulaInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<FormulaInner>>, Page<FormulaInner>>() {
+                @Override
+                public Page<FormulaInner> call(ServiceResponse<Page<FormulaInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;FormulaInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<FormulaInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<FormulaInner>>, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(ServiceResponse<Page<FormulaInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+    ServiceResponse<PageImpl<FormulaInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<FormulaInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<FormulaInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<FormulaInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<FormulaInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;FormulaInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<FormulaInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<FormulaInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<FormulaInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<FormulaInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<FormulaInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<FormulaInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the FormulaInner object if successful.
+     */
+    public FormulaInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<FormulaInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<FormulaInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the FormulaInner object
+     */
+    public Observable<FormulaInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<FormulaInner>, FormulaInner>() {
+            @Override
+            public FormulaInner call(ServiceResponse<FormulaInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the FormulaInner object
+     */
+    public Observable<ServiceResponse<FormulaInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<FormulaInner>>>() {
+                @Override
+                public Observable<ServiceResponse<FormulaInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<FormulaInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<FormulaInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<FormulaInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<FormulaInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the FormulaInner object if successful.
+     */
+    public FormulaInner createOrUpdateResource(String resourceGroupName, String labName, String name, FormulaInner formula) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, formula).toBlocking().last().body();
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<FormulaInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, FormulaInner formula, final ServiceCallback<FormulaInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, formula), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<FormulaInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, FormulaInner formula) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, formula).map(new Func1<ServiceResponse<FormulaInner>, FormulaInner>() {
+            @Override
+            public FormulaInner call(ServiceResponse<FormulaInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<FormulaInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, FormulaInner formula) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (formula == null) {
+            throw new IllegalArgumentException("Parameter formula is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(formula);
+        Observable<Response<ResponseBody>> observable = service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, formula, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPutOrPatchResultAsync(observable, new TypeToken<FormulaInner>() { }.getType());
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the FormulaInner object if successful.
+     */
+    public FormulaInner beginCreateOrUpdateResource(String resourceGroupName, String labName, String name, FormulaInner formula) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, formula).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<FormulaInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, FormulaInner formula, final ServiceCallback<FormulaInner> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, formula), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the FormulaInner object
+     */
+    public Observable<FormulaInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, FormulaInner formula) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, formula).map(new Func1<ServiceResponse<FormulaInner>, FormulaInner>() {
+            @Override
+            public FormulaInner call(ServiceResponse<FormulaInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing Formula. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param formula the FormulaInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the FormulaInner object
+     */
+    public Observable<ServiceResponse<FormulaInner>> beginCreateOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, FormulaInner formula) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (formula == null) {
+            throw new IllegalArgumentException("Parameter formula is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(formula);
+        return service.beginCreateOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, formula, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<FormulaInner>>>() {
+                @Override
+                public Observable<ServiceResponse<FormulaInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<FormulaInner> clientResponse = beginCreateOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<FormulaInner> beginCreateOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<FormulaInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<FormulaInner>() { }.getType())
+                .register(201, new TypeToken<FormulaInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete formula.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the formula.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = deleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> deleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;FormulaInner&gt; object if successful.
+     */
+    public PagedList<FormulaInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<FormulaInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<FormulaInner>(response.body()) {
+            @Override
+            public Page<FormulaInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<FormulaInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<FormulaInner>> serviceFuture, final ListOperationCallback<FormulaInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;FormulaInner&gt; object
+     */
+    public Observable<Page<FormulaInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<FormulaInner>>, Page<FormulaInner>>() {
+                @Override
+                public Page<FormulaInner> call(ServiceResponse<Page<FormulaInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;FormulaInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<FormulaInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<FormulaInner>>, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(ServiceResponse<Page<FormulaInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List formulas.
+     *
+    ServiceResponse<PageImpl<FormulaInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;FormulaInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<FormulaInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<FormulaInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<FormulaInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<FormulaInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<FormulaInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<FormulaInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<FormulaInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<FormulaInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImageImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImageImpl.java
new file mode 100644
index 000000000000..89640bd561b8
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImageImpl.java
@@ -0,0 +1,88 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImage;
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import rx.Observable;
+import org.joda.time.DateTime;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImageReference;
+import java.util.Map;
+
+class GalleryImageImpl extends WrapperImpl<GalleryImageInner> implements GalleryImage {
+    private final DevTestLabsManager manager;
+
+    GalleryImageImpl(GalleryImageInner inner,  DevTestLabsManager manager) {
+        super(inner);
+        this.manager = manager;
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+
+
+    @Override
+    public String author() {
+        return this.inner().author();
+    }
+
+    @Override
+    public DateTime createdDate() {
+        return this.inner().createdDate();
+    }
+
+    @Override
+    public String description() {
+        return this.inner().description();
+    }
+
+    @Override
+    public Boolean enabled() {
+        return this.inner().enabled();
+    }
+
+    @Override
+    public String icon() {
+        return this.inner().icon();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public GalleryImageReference imageReference() {
+        return this.inner().imageReference();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImageInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImageInner.java
new file mode 100644
index 000000000000..d76564b52869
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImageInner.java
@@ -0,0 +1,178 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import org.joda.time.DateTime;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImageReference;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A gallery image.
+ */
+@JsonFlatten
+public class GalleryImageInner extends Resource {
+    /**
+     * The author of the gallery image.
+     */
+    @JsonProperty(value = "properties.author")
+    private String author;
+
+    /**
+     * The creation date of the gallery image.
+     */
+    @JsonProperty(value = "properties.createdDate")
+    private DateTime createdDate;
+
+    /**
+     * The description of the gallery image.
+     */
+    @JsonProperty(value = "properties.description")
+    private String description;
+
+    /**
+     * The image reference of the gallery image.
+     */
+    @JsonProperty(value = "properties.imageReference")
+    private GalleryImageReference imageReference;
+
+    /**
+     * The icon of the gallery image.
+     */
+    @JsonProperty(value = "properties.icon")
+    private String icon;
+
+    /**
+     * Indicates whether this gallery image is enabled.
+     */
+    @JsonProperty(value = "properties.enabled")
+    private Boolean enabled;
+
+    /**
+     * Get the author of the gallery image.
+     *
+     * @return the author value
+     */
+    public String author() {
+        return this.author;
+    }
+
+    /**
+     * Set the author of the gallery image.
+     *
+     * @param author the author value to set
+     * @return the GalleryImageInner object itself.
+     */
+    public GalleryImageInner withAuthor(String author) {
+        this.author = author;
+        return this;
+    }
+
+    /**
+     * Get the creation date of the gallery image.
+     *
+     * @return the createdDate value
+     */
+    public DateTime createdDate() {
+        return this.createdDate;
+    }
+
+    /**
+     * Set the creation date of the gallery image.
+     *
+     * @param createdDate the createdDate value to set
+     * @return the GalleryImageInner object itself.
+     */
+    public GalleryImageInner withCreatedDate(DateTime createdDate) {
+        this.createdDate = createdDate;
+        return this;
+    }
+
+    /**
+     * Get the description of the gallery image.
+     *
+     * @return the description value
+     */
+    public String description() {
+        return this.description;
+    }
+
+    /**
+     * Set the description of the gallery image.
+     *
+     * @param description the description value to set
+     * @return the GalleryImageInner object itself.
+     */
+    public GalleryImageInner withDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    /**
+     * Get the image reference of the gallery image.
+     *
+     * @return the imageReference value
+     */
+    public GalleryImageReference imageReference() {
+        return this.imageReference;
+    }
+
+    /**
+     * Set the image reference of the gallery image.
+     *
+     * @param imageReference the imageReference value to set
+     * @return the GalleryImageInner object itself.
+     */
+    public GalleryImageInner withImageReference(GalleryImageReference imageReference) {
+        this.imageReference = imageReference;
+        return this;
+    }
+
+    /**
+     * Get the icon of the gallery image.
+     *
+     * @return the icon value
+     */
+    public String icon() {
+        return this.icon;
+    }
+
+    /**
+     * Set the icon of the gallery image.
+     *
+     * @param icon the icon value to set
+     * @return the GalleryImageInner object itself.
+     */
+    public GalleryImageInner withIcon(String icon) {
+        this.icon = icon;
+        return this;
+    }
+
+    /**
+     * Get indicates whether this gallery image is enabled.
+     *
+     * @return the enabled value
+     */
+    public Boolean enabled() {
+        return this.enabled;
+    }
+
+    /**
+     * Set indicates whether this gallery image is enabled.
+     *
+     * @param enabled the enabled value to set
+     * @return the GalleryImageInner object itself.
+     */
+    public GalleryImageInner withEnabled(Boolean enabled) {
+        this.enabled = enabled;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImagesImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImagesImpl.java
new file mode 100644
index 000000000000..a12f8118fbea
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImagesImpl.java
@@ -0,0 +1,53 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImages;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImage;
+
+class GalleryImagesImpl extends WrapperImpl<GalleryImagesInner> implements GalleryImages {
+    private final DevTestLabsManager manager;
+
+    GalleryImagesImpl(DevTestLabsManager manager) {
+        super(manager.inner().galleryImages());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    private GalleryImageImpl wrapModel(GalleryImageInner inner) {
+        return  new GalleryImageImpl(inner, manager());
+    }
+
+    @Override
+    public Observable<GalleryImage> listAsync(final String resourceGroupName, final String labName) {
+        GalleryImagesInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<GalleryImageInner>, Iterable<GalleryImageInner>>() {
+            @Override
+            public Iterable<GalleryImageInner> call(Page<GalleryImageInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<GalleryImageInner, GalleryImage>() {
+            @Override
+            public GalleryImage call(GalleryImageInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImagesInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImagesInner.java
new file mode 100644
index 000000000000..fa205bdb83ec
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GalleryImagesInner.java
@@ -0,0 +1,437 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.Path;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in GalleryImages.
+ */
+public class GalleryImagesInner {
+    /** The Retrofit service to perform REST calls. */
+    private GalleryImagesService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of GalleryImagesInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public GalleryImagesInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(GalleryImagesService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for GalleryImages to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface GalleryImagesService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImages list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/galleryimages")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImages listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;GalleryImageInner&gt; object if successful.
+     */
+    public PagedList<GalleryImageInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<GalleryImageInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<GalleryImageInner>(response.body()) {
+            @Override
+            public Page<GalleryImageInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<GalleryImageInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<GalleryImageInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;GalleryImageInner&gt; object
+     */
+    public Observable<Page<GalleryImageInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<GalleryImageInner>>, Page<GalleryImageInner>>() {
+                @Override
+                public Page<GalleryImageInner> call(ServiceResponse<Page<GalleryImageInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;GalleryImageInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<GalleryImageInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<GalleryImageInner>>, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(ServiceResponse<Page<GalleryImageInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;GalleryImageInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<GalleryImageInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<GalleryImageInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<GalleryImageInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;GalleryImageInner&gt; object if successful.
+     */
+    public PagedList<GalleryImageInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<GalleryImageInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<GalleryImageInner>(response.body()) {
+            @Override
+            public Page<GalleryImageInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<GalleryImageInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<GalleryImageInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;GalleryImageInner&gt; object
+     */
+    public Observable<Page<GalleryImageInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<GalleryImageInner>>, Page<GalleryImageInner>>() {
+                @Override
+                public Page<GalleryImageInner> call(ServiceResponse<Page<GalleryImageInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;GalleryImageInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<GalleryImageInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<GalleryImageInner>>, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(ServiceResponse<Page<GalleryImageInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+    ServiceResponse<PageImpl<GalleryImageInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<GalleryImageInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<GalleryImageInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<GalleryImageInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<GalleryImageInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;GalleryImageInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<GalleryImageInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<GalleryImageInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<GalleryImageInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<GalleryImageInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<GalleryImageInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<GalleryImageInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;GalleryImageInner&gt; object if successful.
+     */
+    public PagedList<GalleryImageInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<GalleryImageInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<GalleryImageInner>(response.body()) {
+            @Override
+            public Page<GalleryImageInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<GalleryImageInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<GalleryImageInner>> serviceFuture, final ListOperationCallback<GalleryImageInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;GalleryImageInner&gt; object
+     */
+    public Observable<Page<GalleryImageInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<GalleryImageInner>>, Page<GalleryImageInner>>() {
+                @Override
+                public Page<GalleryImageInner> call(ServiceResponse<Page<GalleryImageInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;GalleryImageInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<GalleryImageInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<GalleryImageInner>>, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(ServiceResponse<Page<GalleryImageInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List gallery images.
+     *
+    ServiceResponse<PageImpl<GalleryImageInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;GalleryImageInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<GalleryImageInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<GalleryImageInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<GalleryImageInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<GalleryImageInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<GalleryImageInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<GalleryImageInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<GalleryImageInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<GalleryImageInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GenerateUploadUriResponseImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GenerateUploadUriResponseImpl.java
new file mode 100644
index 000000000000..bd7329d93f95
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GenerateUploadUriResponseImpl.java
@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GenerateUploadUriResponse;
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+
+class GenerateUploadUriResponseImpl extends WrapperImpl<GenerateUploadUriResponseInner> implements GenerateUploadUriResponse {
+    private final DevTestLabsManager manager;
+    GenerateUploadUriResponseImpl(GenerateUploadUriResponseInner inner, DevTestLabsManager manager) {
+        super(inner);
+        this.manager = manager;
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public String uploadUri() {
+        return this.inner().uploadUri();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GenerateUploadUriResponseInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GenerateUploadUriResponseInner.java
new file mode 100644
index 000000000000..38252cd716d0
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/GenerateUploadUriResponseInner.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Response body for generating an upload URI.
+ */
+public class GenerateUploadUriResponseInner {
+    /**
+     * The upload URI for the VHD.
+     */
+    @JsonProperty(value = "uploadUri")
+    private String uploadUri;
+
+    /**
+     * Get the upload URI for the VHD.
+     *
+     * @return the uploadUri value
+     */
+    public String uploadUri() {
+        return this.uploadUri;
+    }
+
+    /**
+     * Set the upload URI for the VHD.
+     *
+     * @param uploadUri the uploadUri value to set
+     * @return the GenerateUploadUriResponseInner object itself.
+     */
+    public GenerateUploadUriResponseInner withUploadUri(String uploadUri) {
+        this.uploadUri = uploadUri;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/IdParsingUtils.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/IdParsingUtils.java
new file mode 100644
index 000000000000..12239a0e2594
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/IdParsingUtils.java
@@ -0,0 +1,57 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+import java.util.Arrays;
+import java.util.Iterator;
+
+class IdParsingUtils {
+    public static String getValueFromIdByName(String id, String name) {
+        if (id == null) {
+            return null;
+        }
+        Iterable<String> iterable = Arrays.asList(id.split("/"));
+        Iterator<String> itr = iterable.iterator();
+        while (itr.hasNext()) {
+            String part = itr.next();
+            if (part != null && part.trim() != "") {
+                if (part.equalsIgnoreCase(name)) {
+                    if (itr.hasNext()) {
+                        return itr.next();
+                    } else {
+                        return null;
+                    }
+                }
+            }
+        }
+        return null;
+    }
+
+    public static String getValueFromIdByPosition(String id, int pos) {
+        if (id == null) {
+            return null;
+        }
+        Iterable<String> iterable = Arrays.asList(id.split("/"));
+        Iterator <String> itr = iterable.iterator();
+        int index = 0;
+        while (itr.hasNext()) {
+            String part = itr.next();
+            if (part != null && part.trim() != "") {
+                if (index == pos) {
+                    if (itr.hasNext()) {
+                        return itr.next();
+                    } else {
+                        return null;
+                    }
+                }
+            }
+            index++;
+        }
+        return null;
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabImpl.java
new file mode 100644
index 000000000000..e507e4b6de27
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabImpl.java
@@ -0,0 +1,137 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.resources.models.implementation.GroupableResourceCoreImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Lab;
+import rx.Observable;
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabStorageType;
+import org.joda.time.DateTime;
+
+class LabImpl extends GroupableResourceCoreImpl<Lab, LabInner, LabImpl, DevTestLabsManager> implements Lab, Lab.Definition, Lab.Update {
+    LabImpl(String name, LabInner inner, DevTestLabsManager manager) {
+        super(name, inner, manager);
+    }
+
+    @Override
+    public Observable<Lab> createResourceAsync() {
+        LabsInner client = this.manager().inner().labs();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName(), this.name(), this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<Lab> updateResourceAsync() {
+        LabsInner client = this.manager().inner().labs();
+        return client.patchResourceAsync(this.resourceGroupName(), this.name(), this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<LabInner> getInnerAsync() {
+        LabsInner client = this.manager().inner().labs();
+        return client.getByResourceGroupAsync(this.resourceGroupName(), this.name());
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public String artifactsStorageAccount() {
+        return this.inner().artifactsStorageAccount();
+    }
+
+    @Override
+    public DateTime createdDate() {
+        return this.inner().createdDate();
+    }
+
+    @Override
+    public String defaultStorageAccount() {
+        return this.inner().defaultStorageAccount();
+    }
+
+    @Override
+    public String defaultVirtualNetworkId() {
+        return this.inner().defaultVirtualNetworkId();
+    }
+
+    @Override
+    public LabStorageType labStorageType() {
+        return this.inner().labStorageType();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public List<String> storageAccounts() {
+        return this.inner().storageAccounts();
+    }
+
+    @Override
+    public String vaultName() {
+        return this.inner().vaultName();
+    }
+
+    @Override
+    public LabImpl withArtifactsStorageAccount(String artifactsStorageAccount) {
+        this.inner().withArtifactsStorageAccount(artifactsStorageAccount);
+        return this;
+    }
+
+    @Override
+    public LabImpl withCreatedDate(DateTime createdDate) {
+        this.inner().withCreatedDate(createdDate);
+        return this;
+    }
+
+    @Override
+    public LabImpl withDefaultStorageAccount(String defaultStorageAccount) {
+        this.inner().withDefaultStorageAccount(defaultStorageAccount);
+        return this;
+    }
+
+    @Override
+    public LabImpl withDefaultVirtualNetworkId(String defaultVirtualNetworkId) {
+        this.inner().withDefaultVirtualNetworkId(defaultVirtualNetworkId);
+        return this;
+    }
+
+    @Override
+    public LabImpl withLabStorageType(LabStorageType labStorageType) {
+        this.inner().withLabStorageType(labStorageType);
+        return this;
+    }
+
+    @Override
+    public LabImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public LabImpl withStorageAccounts(List<String> storageAccounts) {
+        this.inner().withStorageAccounts(storageAccounts);
+        return this;
+    }
+
+    @Override
+    public LabImpl withVaultName(String vaultName) {
+        this.inner().withVaultName(vaultName);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabInner.java
new file mode 100644
index 000000000000..04907c0d3a10
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabInner.java
@@ -0,0 +1,232 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabStorageType;
+import org.joda.time.DateTime;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A lab.
+ */
+@JsonFlatten
+public class LabInner extends Resource {
+    /**
+     * The lab's default storage account.
+     */
+    @JsonProperty(value = "properties.defaultStorageAccount")
+    private String defaultStorageAccount;
+
+    /**
+     * The artifact storage account of the lab.
+     */
+    @JsonProperty(value = "properties.artifactsStorageAccount")
+    private String artifactsStorageAccount;
+
+    /**
+     * The storage accounts of the lab.
+     */
+    @JsonProperty(value = "properties.storageAccounts")
+    private List<String> storageAccounts;
+
+    /**
+     * The name of the key vault of the lab.
+     */
+    @JsonProperty(value = "properties.vaultName")
+    private String vaultName;
+
+    /**
+     * The type of the lab storage. Possible values include: 'Standard',
+     * 'Premium'.
+     */
+    @JsonProperty(value = "properties.labStorageType")
+    private LabStorageType labStorageType;
+
+    /**
+     * The default virtual network identifier of the lab.
+     */
+    @JsonProperty(value = "properties.defaultVirtualNetworkId")
+    private String defaultVirtualNetworkId;
+
+    /**
+     * The creation date of the lab.
+     */
+    @JsonProperty(value = "properties.createdDate")
+    private DateTime createdDate;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the lab's default storage account.
+     *
+     * @return the defaultStorageAccount value
+     */
+    public String defaultStorageAccount() {
+        return this.defaultStorageAccount;
+    }
+
+    /**
+     * Set the lab's default storage account.
+     *
+     * @param defaultStorageAccount the defaultStorageAccount value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withDefaultStorageAccount(String defaultStorageAccount) {
+        this.defaultStorageAccount = defaultStorageAccount;
+        return this;
+    }
+
+    /**
+     * Get the artifact storage account of the lab.
+     *
+     * @return the artifactsStorageAccount value
+     */
+    public String artifactsStorageAccount() {
+        return this.artifactsStorageAccount;
+    }
+
+    /**
+     * Set the artifact storage account of the lab.
+     *
+     * @param artifactsStorageAccount the artifactsStorageAccount value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withArtifactsStorageAccount(String artifactsStorageAccount) {
+        this.artifactsStorageAccount = artifactsStorageAccount;
+        return this;
+    }
+
+    /**
+     * Get the storage accounts of the lab.
+     *
+     * @return the storageAccounts value
+     */
+    public List<String> storageAccounts() {
+        return this.storageAccounts;
+    }
+
+    /**
+     * Set the storage accounts of the lab.
+     *
+     * @param storageAccounts the storageAccounts value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withStorageAccounts(List<String> storageAccounts) {
+        this.storageAccounts = storageAccounts;
+        return this;
+    }
+
+    /**
+     * Get the name of the key vault of the lab.
+     *
+     * @return the vaultName value
+     */
+    public String vaultName() {
+        return this.vaultName;
+    }
+
+    /**
+     * Set the name of the key vault of the lab.
+     *
+     * @param vaultName the vaultName value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withVaultName(String vaultName) {
+        this.vaultName = vaultName;
+        return this;
+    }
+
+    /**
+     * Get the type of the lab storage. Possible values include: 'Standard', 'Premium'.
+     *
+     * @return the labStorageType value
+     */
+    public LabStorageType labStorageType() {
+        return this.labStorageType;
+    }
+
+    /**
+     * Set the type of the lab storage. Possible values include: 'Standard', 'Premium'.
+     *
+     * @param labStorageType the labStorageType value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withLabStorageType(LabStorageType labStorageType) {
+        this.labStorageType = labStorageType;
+        return this;
+    }
+
+    /**
+     * Get the default virtual network identifier of the lab.
+     *
+     * @return the defaultVirtualNetworkId value
+     */
+    public String defaultVirtualNetworkId() {
+        return this.defaultVirtualNetworkId;
+    }
+
+    /**
+     * Set the default virtual network identifier of the lab.
+     *
+     * @param defaultVirtualNetworkId the defaultVirtualNetworkId value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withDefaultVirtualNetworkId(String defaultVirtualNetworkId) {
+        this.defaultVirtualNetworkId = defaultVirtualNetworkId;
+        return this;
+    }
+
+    /**
+     * Get the creation date of the lab.
+     *
+     * @return the createdDate value
+     */
+    public DateTime createdDate() {
+        return this.createdDate;
+    }
+
+    /**
+     * Set the creation date of the lab.
+     *
+     * @param createdDate the createdDate value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withCreatedDate(DateTime createdDate) {
+        this.createdDate = createdDate;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the LabInner object itself.
+     */
+    public LabInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVhdImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVhdImpl.java
new file mode 100644
index 000000000000..666e6e823dec
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVhdImpl.java
@@ -0,0 +1,31 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabVhd;
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+
+class LabVhdImpl extends WrapperImpl<LabVhdInner> implements LabVhd {
+    private final DevTestLabsManager manager;
+    LabVhdImpl(LabVhdInner inner, DevTestLabsManager manager) {
+        super(inner);
+        this.manager = manager;
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVhdInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVhdInner.java
new file mode 100644
index 000000000000..8882de209aeb
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVhdInner.java
@@ -0,0 +1,43 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+
+/**
+ * Properties of a VHD in the lab.
+ */
+public class LabVhdInner {
+    /**
+     * The absolute URI of the VHD.
+     */
+    @JsonProperty(value = "id")
+    private String id;
+
+    /**
+     * Get the absolute URI of the VHD.
+     *
+     * @return the id value
+     */
+    public String id() {
+        return this.id;
+    }
+
+    /**
+     * Set the absolute URI of the VHD.
+     *
+     * @param id the id value to set
+     * @return the LabVhdInner object itself.
+     */
+    public LabVhdInner withId(String id) {
+        this.id = id;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVirtualMachineImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVirtualMachineImpl.java
new file mode 100644
index 000000000000..b41185e87ca5
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVirtualMachineImpl.java
@@ -0,0 +1,341 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabVirtualMachine;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactInstallProperties;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactDeploymentStatusProperties;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImageReference;
+import java.util.Map;
+
+class LabVirtualMachineImpl extends CreatableUpdatableImpl<LabVirtualMachine, LabVirtualMachineInner, LabVirtualMachineImpl> implements LabVirtualMachine, LabVirtualMachine.Definition, LabVirtualMachine.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    LabVirtualMachineImpl(String name, DevTestLabsManager manager) {
+        super(name, new LabVirtualMachineInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    LabVirtualMachineImpl(LabVirtualMachineInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "virtualmachines");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<LabVirtualMachine> createResourceAsync() {
+        VirtualMachinesInner client = this.manager().inner().virtualMachines();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<LabVirtualMachine> updateResourceAsync() {
+        VirtualMachinesInner client = this.manager().inner().virtualMachines();
+        return client.patchResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<LabVirtualMachineInner> getInnerAsync() {
+        VirtualMachinesInner client = this.manager().inner().virtualMachines();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public ArtifactDeploymentStatusProperties artifactDeploymentStatus() {
+        return this.inner().artifactDeploymentStatus();
+    }
+
+    @Override
+    public List<ArtifactInstallProperties> artifacts() {
+        return this.inner().artifacts();
+    }
+
+    @Override
+    public String computeId() {
+        return this.inner().computeId();
+    }
+
+    @Override
+    public String createdByUser() {
+        return this.inner().createdByUser();
+    }
+
+    @Override
+    public String createdByUserId() {
+        return this.inner().createdByUserId();
+    }
+
+    @Override
+    public String customImageId() {
+        return this.inner().customImageId();
+    }
+
+    @Override
+    public Boolean disallowPublicIpAddress() {
+        return this.inner().disallowPublicIpAddress();
+    }
+
+    @Override
+    public String fqdn() {
+        return this.inner().fqdn();
+    }
+
+    @Override
+    public GalleryImageReference galleryImageReference() {
+        return this.inner().galleryImageReference();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public Boolean isAuthenticationWithSshKey() {
+        return this.inner().isAuthenticationWithSshKey();
+    }
+
+    @Override
+    public String labSubnetName() {
+        return this.inner().labSubnetName();
+    }
+
+    @Override
+    public String labVirtualNetworkId() {
+        return this.inner().labVirtualNetworkId();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String notes() {
+        return this.inner().notes();
+    }
+
+    @Override
+    public String osType() {
+        return this.inner().osType();
+    }
+
+    @Override
+    public String ownerObjectId() {
+        return this.inner().ownerObjectId();
+    }
+
+    @Override
+    public String password() {
+        return this.inner().password();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public String size() {
+        return this.inner().size();
+    }
+
+    @Override
+    public String sshKey() {
+        return this.inner().sshKey();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public String userName() {
+        return this.inner().userName();
+    }
+
+    @Override
+    public LabVirtualMachineImpl withExistingLab(String resourceGroupName, String labName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withArtifactDeploymentStatus(ArtifactDeploymentStatusProperties artifactDeploymentStatus) {
+        this.inner().withArtifactDeploymentStatus(artifactDeploymentStatus);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withArtifacts(List<ArtifactInstallProperties> artifacts) {
+        this.inner().withArtifacts(artifacts);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withComputeId(String computeId) {
+        this.inner().withComputeId(computeId);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withCreatedByUser(String createdByUser) {
+        this.inner().withCreatedByUser(createdByUser);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withCreatedByUserId(String createdByUserId) {
+        this.inner().withCreatedByUserId(createdByUserId);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withCustomImageId(String customImageId) {
+        this.inner().withCustomImageId(customImageId);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withDisallowPublicIpAddress(Boolean disallowPublicIpAddress) {
+        this.inner().withDisallowPublicIpAddress(disallowPublicIpAddress);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withFqdn(String fqdn) {
+        this.inner().withFqdn(fqdn);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withGalleryImageReference(GalleryImageReference galleryImageReference) {
+        this.inner().withGalleryImageReference(galleryImageReference);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withIsAuthenticationWithSshKey(Boolean isAuthenticationWithSshKey) {
+        this.inner().withIsAuthenticationWithSshKey(isAuthenticationWithSshKey);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withLabSubnetName(String labSubnetName) {
+        this.inner().withLabSubnetName(labSubnetName);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withLabVirtualNetworkId(String labVirtualNetworkId) {
+        this.inner().withLabVirtualNetworkId(labVirtualNetworkId);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withNotes(String notes) {
+        this.inner().withNotes(notes);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withOsType(String osType) {
+        this.inner().withOsType(osType);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withOwnerObjectId(String ownerObjectId) {
+        this.inner().withOwnerObjectId(ownerObjectId);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withPassword(String password) {
+        this.inner().withPassword(password);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withSize(String size) {
+        this.inner().withSize(size);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withSshKey(String sshKey) {
+        this.inner().withSshKey(sshKey);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+    @Override
+    public LabVirtualMachineImpl withUserName(String userName) {
+        this.inner().withUserName(userName);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVirtualMachineInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVirtualMachineInner.java
new file mode 100644
index 000000000000..7179deca6a93
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabVirtualMachineInner.java
@@ -0,0 +1,546 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactInstallProperties;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactDeploymentStatusProperties;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GalleryImageReference;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A virtual machine.
+ */
+@JsonFlatten
+public class LabVirtualMachineInner extends Resource {
+    /**
+     * The notes of the virtual machine.
+     */
+    @JsonProperty(value = "properties.notes")
+    private String notes;
+
+    /**
+     * The object identifier of the owner of the virtual machine.
+     */
+    @JsonProperty(value = "properties.ownerObjectId")
+    private String ownerObjectId;
+
+    /**
+     * The object identifier of the creator of the virtual machine.
+     */
+    @JsonProperty(value = "properties.createdByUserId")
+    private String createdByUserId;
+
+    /**
+     * The email address of creator of the virtual machine.
+     */
+    @JsonProperty(value = "properties.createdByUser")
+    private String createdByUser;
+
+    /**
+     * The resource identifier (Microsoft.Compute) of the virtual machine.
+     */
+    @JsonProperty(value = "properties.computeId")
+    private String computeId;
+
+    /**
+     * The custom image identifier of the virtual machine.
+     */
+    @JsonProperty(value = "properties.customImageId")
+    private String customImageId;
+
+    /**
+     * The OS type of the virtual machine.
+     */
+    @JsonProperty(value = "properties.osType")
+    private String osType;
+
+    /**
+     * The size of the virtual machine.
+     */
+    @JsonProperty(value = "properties.size")
+    private String size;
+
+    /**
+     * The user name of the virtual machine.
+     */
+    @JsonProperty(value = "properties.userName")
+    private String userName;
+
+    /**
+     * The password of the virtual machine administrator.
+     */
+    @JsonProperty(value = "properties.password")
+    private String password;
+
+    /**
+     * The SSH key of the virtual machine administrator.
+     */
+    @JsonProperty(value = "properties.sshKey")
+    private String sshKey;
+
+    /**
+     * A value indicating whether this virtual machine uses an SSH key for
+     * authentication.
+     */
+    @JsonProperty(value = "properties.isAuthenticationWithSshKey")
+    private Boolean isAuthenticationWithSshKey;
+
+    /**
+     * The fully-qualified domain name of the virtual machine.
+     */
+    @JsonProperty(value = "properties.fqdn")
+    private String fqdn;
+
+    /**
+     * The lab subnet name of the virtual machine.
+     */
+    @JsonProperty(value = "properties.labSubnetName")
+    private String labSubnetName;
+
+    /**
+     * The lab virtual network identifier of the virtual machine.
+     */
+    @JsonProperty(value = "properties.labVirtualNetworkId")
+    private String labVirtualNetworkId;
+
+    /**
+     * Indicates whether the virtual machine is to be created without a public
+     * IP address.
+     */
+    @JsonProperty(value = "properties.disallowPublicIpAddress")
+    private Boolean disallowPublicIpAddress;
+
+    /**
+     * The artifacts to be installed on the virtual machine.
+     */
+    @JsonProperty(value = "properties.artifacts")
+    private List<ArtifactInstallProperties> artifacts;
+
+    /**
+     * The artifact deployment status for the virtual machine.
+     */
+    @JsonProperty(value = "properties.artifactDeploymentStatus")
+    private ArtifactDeploymentStatusProperties artifactDeploymentStatus;
+
+    /**
+     * The Microsoft Azure Marketplace image reference of the virtual machine.
+     */
+    @JsonProperty(value = "properties.galleryImageReference")
+    private GalleryImageReference galleryImageReference;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the notes of the virtual machine.
+     *
+     * @return the notes value
+     */
+    public String notes() {
+        return this.notes;
+    }
+
+    /**
+     * Set the notes of the virtual machine.
+     *
+     * @param notes the notes value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withNotes(String notes) {
+        this.notes = notes;
+        return this;
+    }
+
+    /**
+     * Get the object identifier of the owner of the virtual machine.
+     *
+     * @return the ownerObjectId value
+     */
+    public String ownerObjectId() {
+        return this.ownerObjectId;
+    }
+
+    /**
+     * Set the object identifier of the owner of the virtual machine.
+     *
+     * @param ownerObjectId the ownerObjectId value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withOwnerObjectId(String ownerObjectId) {
+        this.ownerObjectId = ownerObjectId;
+        return this;
+    }
+
+    /**
+     * Get the object identifier of the creator of the virtual machine.
+     *
+     * @return the createdByUserId value
+     */
+    public String createdByUserId() {
+        return this.createdByUserId;
+    }
+
+    /**
+     * Set the object identifier of the creator of the virtual machine.
+     *
+     * @param createdByUserId the createdByUserId value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withCreatedByUserId(String createdByUserId) {
+        this.createdByUserId = createdByUserId;
+        return this;
+    }
+
+    /**
+     * Get the email address of creator of the virtual machine.
+     *
+     * @return the createdByUser value
+     */
+    public String createdByUser() {
+        return this.createdByUser;
+    }
+
+    /**
+     * Set the email address of creator of the virtual machine.
+     *
+     * @param createdByUser the createdByUser value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withCreatedByUser(String createdByUser) {
+        this.createdByUser = createdByUser;
+        return this;
+    }
+
+    /**
+     * Get the resource identifier (Microsoft.Compute) of the virtual machine.
+     *
+     * @return the computeId value
+     */
+    public String computeId() {
+        return this.computeId;
+    }
+
+    /**
+     * Set the resource identifier (Microsoft.Compute) of the virtual machine.
+     *
+     * @param computeId the computeId value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withComputeId(String computeId) {
+        this.computeId = computeId;
+        return this;
+    }
+
+    /**
+     * Get the custom image identifier of the virtual machine.
+     *
+     * @return the customImageId value
+     */
+    public String customImageId() {
+        return this.customImageId;
+    }
+
+    /**
+     * Set the custom image identifier of the virtual machine.
+     *
+     * @param customImageId the customImageId value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withCustomImageId(String customImageId) {
+        this.customImageId = customImageId;
+        return this;
+    }
+
+    /**
+     * Get the OS type of the virtual machine.
+     *
+     * @return the osType value
+     */
+    public String osType() {
+        return this.osType;
+    }
+
+    /**
+     * Set the OS type of the virtual machine.
+     *
+     * @param osType the osType value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withOsType(String osType) {
+        this.osType = osType;
+        return this;
+    }
+
+    /**
+     * Get the size of the virtual machine.
+     *
+     * @return the size value
+     */
+    public String size() {
+        return this.size;
+    }
+
+    /**
+     * Set the size of the virtual machine.
+     *
+     * @param size the size value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withSize(String size) {
+        this.size = size;
+        return this;
+    }
+
+    /**
+     * Get the user name of the virtual machine.
+     *
+     * @return the userName value
+     */
+    public String userName() {
+        return this.userName;
+    }
+
+    /**
+     * Set the user name of the virtual machine.
+     *
+     * @param userName the userName value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withUserName(String userName) {
+        this.userName = userName;
+        return this;
+    }
+
+    /**
+     * Get the password of the virtual machine administrator.
+     *
+     * @return the password value
+     */
+    public String password() {
+        return this.password;
+    }
+
+    /**
+     * Set the password of the virtual machine administrator.
+     *
+     * @param password the password value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withPassword(String password) {
+        this.password = password;
+        return this;
+    }
+
+    /**
+     * Get the SSH key of the virtual machine administrator.
+     *
+     * @return the sshKey value
+     */
+    public String sshKey() {
+        return this.sshKey;
+    }
+
+    /**
+     * Set the SSH key of the virtual machine administrator.
+     *
+     * @param sshKey the sshKey value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withSshKey(String sshKey) {
+        this.sshKey = sshKey;
+        return this;
+    }
+
+    /**
+     * Get a value indicating whether this virtual machine uses an SSH key for authentication.
+     *
+     * @return the isAuthenticationWithSshKey value
+     */
+    public Boolean isAuthenticationWithSshKey() {
+        return this.isAuthenticationWithSshKey;
+    }
+
+    /**
+     * Set a value indicating whether this virtual machine uses an SSH key for authentication.
+     *
+     * @param isAuthenticationWithSshKey the isAuthenticationWithSshKey value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withIsAuthenticationWithSshKey(Boolean isAuthenticationWithSshKey) {
+        this.isAuthenticationWithSshKey = isAuthenticationWithSshKey;
+        return this;
+    }
+
+    /**
+     * Get the fully-qualified domain name of the virtual machine.
+     *
+     * @return the fqdn value
+     */
+    public String fqdn() {
+        return this.fqdn;
+    }
+
+    /**
+     * Set the fully-qualified domain name of the virtual machine.
+     *
+     * @param fqdn the fqdn value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withFqdn(String fqdn) {
+        this.fqdn = fqdn;
+        return this;
+    }
+
+    /**
+     * Get the lab subnet name of the virtual machine.
+     *
+     * @return the labSubnetName value
+     */
+    public String labSubnetName() {
+        return this.labSubnetName;
+    }
+
+    /**
+     * Set the lab subnet name of the virtual machine.
+     *
+     * @param labSubnetName the labSubnetName value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withLabSubnetName(String labSubnetName) {
+        this.labSubnetName = labSubnetName;
+        return this;
+    }
+
+    /**
+     * Get the lab virtual network identifier of the virtual machine.
+     *
+     * @return the labVirtualNetworkId value
+     */
+    public String labVirtualNetworkId() {
+        return this.labVirtualNetworkId;
+    }
+
+    /**
+     * Set the lab virtual network identifier of the virtual machine.
+     *
+     * @param labVirtualNetworkId the labVirtualNetworkId value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withLabVirtualNetworkId(String labVirtualNetworkId) {
+        this.labVirtualNetworkId = labVirtualNetworkId;
+        return this;
+    }
+
+    /**
+     * Get indicates whether the virtual machine is to be created without a public IP address.
+     *
+     * @return the disallowPublicIpAddress value
+     */
+    public Boolean disallowPublicIpAddress() {
+        return this.disallowPublicIpAddress;
+    }
+
+    /**
+     * Set indicates whether the virtual machine is to be created without a public IP address.
+     *
+     * @param disallowPublicIpAddress the disallowPublicIpAddress value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withDisallowPublicIpAddress(Boolean disallowPublicIpAddress) {
+        this.disallowPublicIpAddress = disallowPublicIpAddress;
+        return this;
+    }
+
+    /**
+     * Get the artifacts to be installed on the virtual machine.
+     *
+     * @return the artifacts value
+     */
+    public List<ArtifactInstallProperties> artifacts() {
+        return this.artifacts;
+    }
+
+    /**
+     * Set the artifacts to be installed on the virtual machine.
+     *
+     * @param artifacts the artifacts value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withArtifacts(List<ArtifactInstallProperties> artifacts) {
+        this.artifacts = artifacts;
+        return this;
+    }
+
+    /**
+     * Get the artifact deployment status for the virtual machine.
+     *
+     * @return the artifactDeploymentStatus value
+     */
+    public ArtifactDeploymentStatusProperties artifactDeploymentStatus() {
+        return this.artifactDeploymentStatus;
+    }
+
+    /**
+     * Set the artifact deployment status for the virtual machine.
+     *
+     * @param artifactDeploymentStatus the artifactDeploymentStatus value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withArtifactDeploymentStatus(ArtifactDeploymentStatusProperties artifactDeploymentStatus) {
+        this.artifactDeploymentStatus = artifactDeploymentStatus;
+        return this;
+    }
+
+    /**
+     * Get the Microsoft Azure Marketplace image reference of the virtual machine.
+     *
+     * @return the galleryImageReference value
+     */
+    public GalleryImageReference galleryImageReference() {
+        return this.galleryImageReference;
+    }
+
+    /**
+     * Set the Microsoft Azure Marketplace image reference of the virtual machine.
+     *
+     * @param galleryImageReference the galleryImageReference value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withGalleryImageReference(GalleryImageReference galleryImageReference) {
+        this.galleryImageReference = galleryImageReference;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the LabVirtualMachineInner object itself.
+     */
+    public LabVirtualMachineInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabsImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabsImpl.java
new file mode 100644
index 000000000000..52623a1c8c74
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabsImpl.java
@@ -0,0 +1,176 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ * def
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.resources.collection.implementation.GroupableResourcesCoreImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Lab;
+import rx.Observable;
+import rx.Completable;
+import java.util.ArrayList;
+import java.util.Arrays;
+import java.util.Collection;
+import com.microsoft.azure.arm.resources.ResourceUtilsCore;
+import com.microsoft.azure.arm.utils.RXMapper;
+import rx.functions.Func1;
+import com.microsoft.azure.PagedList;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GenerateUploadUriResponse;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabVhd;
+
+class LabsImpl extends GroupableResourcesCoreImpl<Lab, LabImpl, LabInner, LabsInner, DevTestLabsManager>  implements Labs {
+    protected LabsImpl(DevTestLabsManager manager) {
+        super(manager.inner().labs(), manager);
+    }
+
+    @Override
+    protected Observable<LabInner> getInnerAsync(String resourceGroupName, String name) {
+        LabsInner client = this.inner();
+        return client.getByResourceGroupAsync(resourceGroupName, name);
+    }
+
+    @Override
+    protected Completable deleteInnerAsync(String resourceGroupName, String name) {
+        LabsInner client = this.inner();
+        return client.deleteAsync(resourceGroupName, name).toCompletable();
+    }
+
+    @Override
+    public Observable<String> deleteByIdsAsync(Collection<String> ids) {
+        if (ids == null || ids.isEmpty()) {
+            return Observable.empty();
+        }
+        Collection<Observable<String>> observables = new ArrayList<>();
+        for (String id : ids) {
+            final String resourceGroupName = ResourceUtilsCore.groupFromResourceId(id);
+            final String name = ResourceUtilsCore.nameFromResourceId(id);
+            Observable<String> o = RXMapper.map(this.inner().deleteAsync(resourceGroupName, name), id);
+            observables.add(o);
+        }
+        return Observable.mergeDelayError(observables);
+    }
+
+    @Override
+    public Observable<String> deleteByIdsAsync(String...ids) {
+        return this.deleteByIdsAsync(new ArrayList<String>(Arrays.asList(ids)));
+    }
+
+    @Override
+    public void deleteByIds(Collection<String> ids) {
+        if (ids != null && !ids.isEmpty()) {
+            this.deleteByIdsAsync(ids).toBlocking().last();
+        }
+    }
+
+    @Override
+    public void deleteByIds(String...ids) {
+        this.deleteByIds(new ArrayList<String>(Arrays.asList(ids)));
+    }
+
+    @Override
+    public PagedList<Lab> listByResourceGroup(String resourceGroupName) {
+        LabsInner client = this.inner();
+        return this.wrapList(client.listByResourceGroup(resourceGroupName));
+    }
+
+    @Override
+    public Observable<Lab> listByResourceGroupAsync(String resourceGroupName) {
+        LabsInner client = this.inner();
+        return client.listByResourceGroupAsync(resourceGroupName)
+        .flatMapIterable(new Func1<Page<LabInner>, Iterable<LabInner>>() {
+            @Override
+            public Iterable<LabInner> call(Page<LabInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<LabInner, Lab>() {
+            @Override
+            public Lab call(LabInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public PagedList<Lab> list() {
+        LabsInner client = this.inner();
+        return this.wrapList(client.list());
+    }
+
+    @Override
+    public Observable<Lab> listAsync() {
+        LabsInner client = this.inner();
+        return client.listAsync()
+        .flatMapIterable(new Func1<Page<LabInner>, Iterable<LabInner>>() {
+            @Override
+            public Iterable<LabInner> call(Page<LabInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<LabInner, Lab>() {
+            @Override
+            public Lab call(LabInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public LabImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    @Override
+    public Completable createEnvironmentAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        LabsInner client = this.inner();
+        return client.createEnvironmentAsync(resourceGroupName, name, labVirtualMachine).toCompletable();
+    }
+
+    @Override
+    public Observable<GenerateUploadUriResponse> generateUploadUriAsync(String resourceGroupName, String name) {
+        LabsInner client = this.inner();
+        return client.generateUploadUriAsync(resourceGroupName, name)
+        .map(new Func1<GenerateUploadUriResponseInner, GenerateUploadUriResponse>() {
+            @Override
+            public GenerateUploadUriResponse call(GenerateUploadUriResponseInner inner) {
+                return new GenerateUploadUriResponseImpl(inner, manager());
+            }
+        });
+    }
+
+    @Override
+    public Observable<LabVhd> listVhdsAsync(final String resourceGroupName, final String name) {
+        LabsInner client = this.inner();
+        return client.listVhdsAsync(resourceGroupName, name)
+        .flatMapIterable(new Func1<Page<LabVhdInner>, Iterable<LabVhdInner>>() {
+            @Override
+            public Iterable<LabVhdInner> call(Page<LabVhdInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<LabVhdInner, LabVhd>() {
+            @Override
+            public LabVhd call(LabVhdInner inner) {
+                return new LabVhdImpl(inner, manager());
+            }
+        });
+    }
+
+    @Override
+    protected LabImpl wrapModel(LabInner inner) {
+        return  new LabImpl(inner.name(), inner, manager());
+    }
+
+    @Override
+    protected LabImpl wrapModel(String name) {
+        return new LabImpl(name, new LabInner(), this.manager());
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabsInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabsInner.java
new file mode 100644
index 000000000000..9cd2f0f33159
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/LabsInner.java
@@ -0,0 +1,1904 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.collection.InnerSupportsGet;
+import com.microsoft.azure.arm.collection.InnerSupportsDelete;
+import com.microsoft.azure.arm.collection.InnerSupportsListing;
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.GenerateUploadUriParameter;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in Labs.
+ */
+public class LabsInner implements InnerSupportsGet<LabInner>, InnerSupportsDelete<Void>, InnerSupportsListing<LabInner> {
+    /** The Retrofit service to perform REST calls. */
+    private LabsService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of LabsInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public LabsInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(LabsService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for Labs to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface LabsService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs list" })
+        @GET("subscriptions/{subscriptionId}/providers/Microsoft.DevTestLab/labs")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs listByResourceGroup" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs")
+        Observable<Response<ResponseBody>> listByResourceGroup(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs getByResourceGroup" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}")
+        Observable<Response<ResponseBody>> getByResourceGroup(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Body LabInner lab, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs beginCreateOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}")
+        Observable<Response<ResponseBody>> beginCreateOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Body LabInner lab, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs delete" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> delete(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs beginDelete" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> beginDelete(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs patchResource" })
+        @PATCH("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}")
+        Observable<Response<ResponseBody>> patchResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Body LabInner lab, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs createEnvironment" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}/createEnvironment")
+        Observable<Response<ResponseBody>> createEnvironment(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Body LabVirtualMachineInner labVirtualMachine, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs beginCreateEnvironment" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}/createEnvironment")
+        Observable<Response<ResponseBody>> beginCreateEnvironment(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Body LabVirtualMachineInner labVirtualMachine, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs generateUploadUri" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}/generateUploadUri")
+        Observable<Response<ResponseBody>> generateUploadUri(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Body GenerateUploadUriParameter generateUploadUriParameter, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs listVhds" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{name}/listVhds")
+        Observable<Response<ResponseBody>> listVhds(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs listByResourceGroupNext" })
+        @GET
+        Observable<Response<ResponseBody>> listByResourceGroupNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Labs listVhdsNext" })
+        @GET
+        Observable<Response<ResponseBody>> listVhdsNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List labs.
+     *
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabInner&gt; object if successful.
+     */
+    public PagedList<LabInner> list() {
+        ServiceResponse<Page<LabInner>> response = listSinglePageAsync().toBlocking().single();
+        return new PagedList<LabInner>(response.body()) {
+            @Override
+            public Page<LabInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List labs.
+     *
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabInner>> listAsync(final ListOperationCallback<LabInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(),
+            new Func1<String, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List labs.
+     *
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<Page<LabInner>> listAsync() {
+        return listWithServiceResponseAsync()
+            .map(new Func1<ServiceResponse<Page<LabInner>>, Page<LabInner>>() {
+                @Override
+                public Page<LabInner> call(ServiceResponse<Page<LabInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listWithServiceResponseAsync() {
+        return listSinglePageAsync()
+            .concatMap(new Func1<ServiceResponse<Page<LabInner>>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(ServiceResponse<Page<LabInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listSinglePageAsync() {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabInner&gt; object if successful.
+     */
+    public PagedList<LabInner> list(final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<LabInner>> response = listSinglePageAsync(filter, top, orderBy).toBlocking().single();
+        return new PagedList<LabInner>(response.body()) {
+            @Override
+            public Page<LabInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List labs.
+     *
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabInner>> listAsync(final String filter, final Integer top, final String orderBy, final ListOperationCallback<LabInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<Page<LabInner>> listAsync(final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<LabInner>>, Page<LabInner>>() {
+                @Override
+                public Page<LabInner> call(ServiceResponse<Page<LabInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listWithServiceResponseAsync(final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<LabInner>>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(ServiceResponse<Page<LabInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+    ServiceResponse<PageImpl<LabInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<LabInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<LabInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listSinglePageAsync(final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabInner&gt; object if successful.
+     */
+    public PagedList<LabInner> listByResourceGroup(final String resourceGroupName) {
+        ServiceResponse<Page<LabInner>> response = listByResourceGroupSinglePageAsync(resourceGroupName).toBlocking().single();
+        return new PagedList<LabInner>(response.body()) {
+            @Override
+            public Page<LabInner> nextPage(String nextPageLink) {
+                return listByResourceGroupNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabInner>> listByResourceGroupAsync(final String resourceGroupName, final ListOperationCallback<LabInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listByResourceGroupSinglePageAsync(resourceGroupName),
+            new Func1<String, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(String nextPageLink) {
+                    return listByResourceGroupNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<Page<LabInner>> listByResourceGroupAsync(final String resourceGroupName) {
+        return listByResourceGroupWithServiceResponseAsync(resourceGroupName)
+            .map(new Func1<ServiceResponse<Page<LabInner>>, Page<LabInner>>() {
+                @Override
+                public Page<LabInner> call(ServiceResponse<Page<LabInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listByResourceGroupWithServiceResponseAsync(final String resourceGroupName) {
+        return listByResourceGroupSinglePageAsync(resourceGroupName)
+            .concatMap(new Func1<ServiceResponse<Page<LabInner>>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(ServiceResponse<Page<LabInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listByResourceGroupNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listByResourceGroupSinglePageAsync(final String resourceGroupName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.listByResourceGroup(this.client.subscriptionId(), resourceGroupName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabInner>> result = listByResourceGroupDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabInner&gt; object if successful.
+     */
+    public PagedList<LabInner> listByResourceGroup(final String resourceGroupName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<LabInner>> response = listByResourceGroupSinglePageAsync(resourceGroupName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<LabInner>(response.body()) {
+            @Override
+            public Page<LabInner> nextPage(String nextPageLink) {
+                return listByResourceGroupNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabInner>> listByResourceGroupAsync(final String resourceGroupName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<LabInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listByResourceGroupSinglePageAsync(resourceGroupName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(String nextPageLink) {
+                    return listByResourceGroupNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<Page<LabInner>> listByResourceGroupAsync(final String resourceGroupName, final String filter, final Integer top, final String orderBy) {
+        return listByResourceGroupWithServiceResponseAsync(resourceGroupName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<LabInner>>, Page<LabInner>>() {
+                @Override
+                public Page<LabInner> call(ServiceResponse<Page<LabInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listByResourceGroupWithServiceResponseAsync(final String resourceGroupName, final String filter, final Integer top, final String orderBy) {
+        return listByResourceGroupSinglePageAsync(resourceGroupName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<LabInner>>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(ServiceResponse<Page<LabInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listByResourceGroupNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+    ServiceResponse<PageImpl<LabInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<LabInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<LabInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<LabInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listByResourceGroupSinglePageAsync(final String resourceGroupName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.listByResourceGroup(this.client.subscriptionId(), resourceGroupName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabInner>> result = listByResourceGroupDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabInner>> listByResourceGroupDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabInner object if successful.
+     */
+    public LabInner getByResourceGroup(String resourceGroupName, String name) {
+        return getByResourceGroupWithServiceResponseAsync(resourceGroupName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabInner> getByResourceGroupAsync(String resourceGroupName, String name, final ServiceCallback<LabInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getByResourceGroupWithServiceResponseAsync(resourceGroupName, name), serviceCallback);
+    }
+
+    /**
+     * Get lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabInner object
+     */
+    public Observable<LabInner> getByResourceGroupAsync(String resourceGroupName, String name) {
+        return getByResourceGroupWithServiceResponseAsync(resourceGroupName, name).map(new Func1<ServiceResponse<LabInner>, LabInner>() {
+            @Override
+            public LabInner call(ServiceResponse<LabInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabInner object
+     */
+    public Observable<ServiceResponse<LabInner>> getByResourceGroupWithServiceResponseAsync(String resourceGroupName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getByResourceGroup(this.client.subscriptionId(), resourceGroupName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<LabInner>>>() {
+                @Override
+                public Observable<ServiceResponse<LabInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<LabInner> clientResponse = getByResourceGroupDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<LabInner> getByResourceGroupDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<LabInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<LabInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabInner object if successful.
+     */
+    public LabInner createOrUpdateResource(String resourceGroupName, String name, LabInner lab) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, name, lab).toBlocking().last().body();
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabInner> createOrUpdateResourceAsync(String resourceGroupName, String name, LabInner lab, final ServiceCallback<LabInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, name, lab), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<LabInner> createOrUpdateResourceAsync(String resourceGroupName, String name, LabInner lab) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, name, lab).map(new Func1<ServiceResponse<LabInner>, LabInner>() {
+            @Override
+            public LabInner call(ServiceResponse<LabInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<LabInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String name, LabInner lab) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (lab == null) {
+            throw new IllegalArgumentException("Parameter lab is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(lab);
+        Observable<Response<ResponseBody>> observable = service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, name, lab, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPutOrPatchResultAsync(observable, new TypeToken<LabInner>() { }.getType());
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabInner object if successful.
+     */
+    public LabInner beginCreateOrUpdateResource(String resourceGroupName, String name, LabInner lab) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, name, lab).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String name, LabInner lab, final ServiceCallback<LabInner> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, name, lab), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabInner object
+     */
+    public Observable<LabInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String name, LabInner lab) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, name, lab).map(new Func1<ServiceResponse<LabInner>, LabInner>() {
+            @Override
+            public LabInner call(ServiceResponse<LabInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabInner object
+     */
+    public Observable<ServiceResponse<LabInner>> beginCreateOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String name, LabInner lab) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (lab == null) {
+            throw new IllegalArgumentException("Parameter lab is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(lab);
+        return service.beginCreateOrUpdateResource(this.client.subscriptionId(), resourceGroupName, name, lab, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<LabInner>>>() {
+                @Override
+                public Observable<ServiceResponse<LabInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<LabInner> clientResponse = beginCreateOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<LabInner> beginCreateOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<LabInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<LabInner>() { }.getType())
+                .register(201, new TypeToken<LabInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void delete(String resourceGroupName, String name) {
+        deleteWithServiceResponseAsync(resourceGroupName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteAsync(String resourceGroupName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteWithServiceResponseAsync(resourceGroupName, name), serviceCallback);
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> deleteAsync(String resourceGroupName, String name) {
+        return deleteWithServiceResponseAsync(resourceGroupName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> deleteWithServiceResponseAsync(String resourceGroupName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.delete(this.client.subscriptionId(), resourceGroupName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginDelete(String resourceGroupName, String name) {
+        beginDeleteWithServiceResponseAsync(resourceGroupName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginDeleteAsync(String resourceGroupName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginDeleteWithServiceResponseAsync(resourceGroupName, name), serviceCallback);
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginDeleteAsync(String resourceGroupName, String name) {
+        return beginDeleteWithServiceResponseAsync(resourceGroupName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginDeleteWithServiceResponseAsync(String resourceGroupName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginDelete(this.client.subscriptionId(), resourceGroupName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginDeleteDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginDeleteDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Modify properties of labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabInner object if successful.
+     */
+    public LabInner patchResource(String resourceGroupName, String name, LabInner lab) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, name, lab).toBlocking().single().body();
+    }
+
+    /**
+     * Modify properties of labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabInner> patchResourceAsync(String resourceGroupName, String name, LabInner lab, final ServiceCallback<LabInner> serviceCallback) {
+        return ServiceFuture.fromResponse(patchResourceWithServiceResponseAsync(resourceGroupName, name, lab), serviceCallback);
+    }
+
+    /**
+     * Modify properties of labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabInner object
+     */
+    public Observable<LabInner> patchResourceAsync(String resourceGroupName, String name, LabInner lab) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, name, lab).map(new Func1<ServiceResponse<LabInner>, LabInner>() {
+            @Override
+            public LabInner call(ServiceResponse<LabInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Modify properties of labs.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param lab the LabInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabInner object
+     */
+    public Observable<ServiceResponse<LabInner>> patchResourceWithServiceResponseAsync(String resourceGroupName, String name, LabInner lab) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (lab == null) {
+            throw new IllegalArgumentException("Parameter lab is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(lab);
+        return service.patchResource(this.client.subscriptionId(), resourceGroupName, name, lab, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<LabInner>>>() {
+                @Override
+                public Observable<ServiceResponse<LabInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<LabInner> clientResponse = patchResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<LabInner> patchResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<LabInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<LabInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void createEnvironment(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        createEnvironmentWithServiceResponseAsync(resourceGroupName, name, labVirtualMachine).toBlocking().last().body();
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> createEnvironmentAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(createEnvironmentWithServiceResponseAsync(resourceGroupName, name, labVirtualMachine), serviceCallback);
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> createEnvironmentAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return createEnvironmentWithServiceResponseAsync(resourceGroupName, name, labVirtualMachine).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> createEnvironmentWithServiceResponseAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (labVirtualMachine == null) {
+            throw new IllegalArgumentException("Parameter labVirtualMachine is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(labVirtualMachine);
+        Observable<Response<ResponseBody>> observable = service.createEnvironment(this.client.subscriptionId(), resourceGroupName, name, labVirtualMachine, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginCreateEnvironment(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        beginCreateEnvironmentWithServiceResponseAsync(resourceGroupName, name, labVirtualMachine).toBlocking().single().body();
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginCreateEnvironmentAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateEnvironmentWithServiceResponseAsync(resourceGroupName, name, labVirtualMachine), serviceCallback);
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginCreateEnvironmentAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return beginCreateEnvironmentWithServiceResponseAsync(resourceGroupName, name, labVirtualMachine).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create virtual machines in a Lab. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginCreateEnvironmentWithServiceResponseAsync(String resourceGroupName, String name, LabVirtualMachineInner labVirtualMachine) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (labVirtualMachine == null) {
+            throw new IllegalArgumentException("Parameter labVirtualMachine is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(labVirtualMachine);
+        return service.beginCreateEnvironment(this.client.subscriptionId(), resourceGroupName, name, labVirtualMachine, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginCreateEnvironmentDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginCreateEnvironmentDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the GenerateUploadUriResponseInner object if successful.
+     */
+    public GenerateUploadUriResponseInner generateUploadUri(String resourceGroupName, String name) {
+        return generateUploadUriWithServiceResponseAsync(resourceGroupName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<GenerateUploadUriResponseInner> generateUploadUriAsync(String resourceGroupName, String name, final ServiceCallback<GenerateUploadUriResponseInner> serviceCallback) {
+        return ServiceFuture.fromResponse(generateUploadUriWithServiceResponseAsync(resourceGroupName, name), serviceCallback);
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the GenerateUploadUriResponseInner object
+     */
+    public Observable<GenerateUploadUriResponseInner> generateUploadUriAsync(String resourceGroupName, String name) {
+        return generateUploadUriWithServiceResponseAsync(resourceGroupName, name).map(new Func1<ServiceResponse<GenerateUploadUriResponseInner>, GenerateUploadUriResponseInner>() {
+            @Override
+            public GenerateUploadUriResponseInner call(ServiceResponse<GenerateUploadUriResponseInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the GenerateUploadUriResponseInner object
+     */
+    public Observable<ServiceResponse<GenerateUploadUriResponseInner>> generateUploadUriWithServiceResponseAsync(String resourceGroupName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String blobName = null;
+        GenerateUploadUriParameter generateUploadUriParameter = new GenerateUploadUriParameter();
+        generateUploadUriParameter.withBlobName(null);
+        return service.generateUploadUri(this.client.subscriptionId(), resourceGroupName, name, this.client.apiVersion(), this.client.acceptLanguage(), generateUploadUriParameter, this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<GenerateUploadUriResponseInner>>>() {
+                @Override
+                public Observable<ServiceResponse<GenerateUploadUriResponseInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<GenerateUploadUriResponseInner> clientResponse = generateUploadUriDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param blobName The blob name of the upload URI.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the GenerateUploadUriResponseInner object if successful.
+     */
+    public GenerateUploadUriResponseInner generateUploadUri(String resourceGroupName, String name, String blobName) {
+        return generateUploadUriWithServiceResponseAsync(resourceGroupName, name, blobName).toBlocking().single().body();
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param blobName The blob name of the upload URI.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<GenerateUploadUriResponseInner> generateUploadUriAsync(String resourceGroupName, String name, String blobName, final ServiceCallback<GenerateUploadUriResponseInner> serviceCallback) {
+        return ServiceFuture.fromResponse(generateUploadUriWithServiceResponseAsync(resourceGroupName, name, blobName), serviceCallback);
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param blobName The blob name of the upload URI.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the GenerateUploadUriResponseInner object
+     */
+    public Observable<GenerateUploadUriResponseInner> generateUploadUriAsync(String resourceGroupName, String name, String blobName) {
+        return generateUploadUriWithServiceResponseAsync(resourceGroupName, name, blobName).map(new Func1<ServiceResponse<GenerateUploadUriResponseInner>, GenerateUploadUriResponseInner>() {
+            @Override
+            public GenerateUploadUriResponseInner call(ServiceResponse<GenerateUploadUriResponseInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Generate a URI for uploading custom disk images to a Lab.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param blobName The blob name of the upload URI.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the GenerateUploadUriResponseInner object
+     */
+    public Observable<ServiceResponse<GenerateUploadUriResponseInner>> generateUploadUriWithServiceResponseAsync(String resourceGroupName, String name, String blobName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        GenerateUploadUriParameter generateUploadUriParameter = new GenerateUploadUriParameter();
+        generateUploadUriParameter.withBlobName(blobName);
+        return service.generateUploadUri(this.client.subscriptionId(), resourceGroupName, name, this.client.apiVersion(), this.client.acceptLanguage(), generateUploadUriParameter, this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<GenerateUploadUriResponseInner>>>() {
+                @Override
+                public Observable<ServiceResponse<GenerateUploadUriResponseInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<GenerateUploadUriResponseInner> clientResponse = generateUploadUriDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<GenerateUploadUriResponseInner> generateUploadUriDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<GenerateUploadUriResponseInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<GenerateUploadUriResponseInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabVhdInner&gt; object if successful.
+     */
+    public PagedList<LabVhdInner> listVhds(final String resourceGroupName, final String name) {
+        ServiceResponse<Page<LabVhdInner>> response = listVhdsSinglePageAsync(resourceGroupName, name).toBlocking().single();
+        return new PagedList<LabVhdInner>(response.body()) {
+            @Override
+            public Page<LabVhdInner> nextPage(String nextPageLink) {
+                return listVhdsNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabVhdInner>> listVhdsAsync(final String resourceGroupName, final String name, final ListOperationCallback<LabVhdInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listVhdsSinglePageAsync(resourceGroupName, name),
+            new Func1<String, Observable<ServiceResponse<Page<LabVhdInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVhdInner>>> call(String nextPageLink) {
+                    return listVhdsNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVhdInner&gt; object
+     */
+    public Observable<Page<LabVhdInner>> listVhdsAsync(final String resourceGroupName, final String name) {
+        return listVhdsWithServiceResponseAsync(resourceGroupName, name)
+            .map(new Func1<ServiceResponse<Page<LabVhdInner>>, Page<LabVhdInner>>() {
+                @Override
+                public Page<LabVhdInner> call(ServiceResponse<Page<LabVhdInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVhdInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabVhdInner>>> listVhdsWithServiceResponseAsync(final String resourceGroupName, final String name) {
+        return listVhdsSinglePageAsync(resourceGroupName, name)
+            .concatMap(new Func1<ServiceResponse<Page<LabVhdInner>>, Observable<ServiceResponse<Page<LabVhdInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVhdInner>>> call(ServiceResponse<Page<LabVhdInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listVhdsNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+    ServiceResponse<PageImpl<LabVhdInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<LabVhdInner>> * @param name The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabVhdInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabVhdInner>>> listVhdsSinglePageAsync(final String resourceGroupName, final String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.listVhds(this.client.subscriptionId(), resourceGroupName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabVhdInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVhdInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabVhdInner>> result = listVhdsDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabVhdInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabVhdInner>> listVhdsDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabVhdInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabVhdInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabInner&gt; object if successful.
+     */
+    public PagedList<LabInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<LabInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<LabInner>(response.body()) {
+            @Override
+            public Page<LabInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<LabInner>> serviceFuture, final ListOperationCallback<LabInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<Page<LabInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<LabInner>>, Page<LabInner>>() {
+                @Override
+                public Page<LabInner> call(ServiceResponse<Page<LabInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<LabInner>>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(ServiceResponse<Page<LabInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+    ServiceResponse<PageImpl<LabInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabInner&gt; object if successful.
+     */
+    public PagedList<LabInner> listByResourceGroupNext(final String nextPageLink) {
+        ServiceResponse<Page<LabInner>> response = listByResourceGroupNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<LabInner>(response.body()) {
+            @Override
+            public Page<LabInner> nextPage(String nextPageLink) {
+                return listByResourceGroupNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabInner>> listByResourceGroupNextAsync(final String nextPageLink, final ServiceFuture<List<LabInner>> serviceFuture, final ListOperationCallback<LabInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listByResourceGroupNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(String nextPageLink) {
+                    return listByResourceGroupNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<Page<LabInner>> listByResourceGroupNextAsync(final String nextPageLink) {
+        return listByResourceGroupNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<LabInner>>, Page<LabInner>>() {
+                @Override
+                public Page<LabInner> call(ServiceResponse<Page<LabInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listByResourceGroupNextWithServiceResponseAsync(final String nextPageLink) {
+        return listByResourceGroupNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<LabInner>>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(ServiceResponse<Page<LabInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listByResourceGroupNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List labs.
+     *
+    ServiceResponse<PageImpl<LabInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabInner>>> listByResourceGroupNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listByResourceGroupNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabInner>> result = listByResourceGroupNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabInner>> listByResourceGroupNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabVhdInner&gt; object if successful.
+     */
+    public PagedList<LabVhdInner> listVhdsNext(final String nextPageLink) {
+        ServiceResponse<Page<LabVhdInner>> response = listVhdsNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<LabVhdInner>(response.body()) {
+            @Override
+            public Page<LabVhdInner> nextPage(String nextPageLink) {
+                return listVhdsNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabVhdInner>> listVhdsNextAsync(final String nextPageLink, final ServiceFuture<List<LabVhdInner>> serviceFuture, final ListOperationCallback<LabVhdInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listVhdsNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<LabVhdInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVhdInner>>> call(String nextPageLink) {
+                    return listVhdsNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVhdInner&gt; object
+     */
+    public Observable<Page<LabVhdInner>> listVhdsNextAsync(final String nextPageLink) {
+        return listVhdsNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<LabVhdInner>>, Page<LabVhdInner>>() {
+                @Override
+                public Page<LabVhdInner> call(ServiceResponse<Page<LabVhdInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVhdInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabVhdInner>>> listVhdsNextWithServiceResponseAsync(final String nextPageLink) {
+        return listVhdsNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<LabVhdInner>>, Observable<ServiceResponse<Page<LabVhdInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVhdInner>>> call(ServiceResponse<Page<LabVhdInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listVhdsNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List disk images available for custom image creation.
+     *
+    ServiceResponse<PageImpl<LabVhdInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabVhdInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabVhdInner>>> listVhdsNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listVhdsNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabVhdInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVhdInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabVhdInner>> result = listVhdsNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabVhdInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabVhdInner>> listVhdsNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabVhdInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabVhdInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PageImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PageImpl.java
new file mode 100644
index 000000000000..b9973ec6fd30
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PageImpl.java
@@ -0,0 +1,75 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.azure.Page;
+import java.util.List;
+
+/**
+ * An instance of this class defines a page of Azure resources and a link to
+ * get the next page of resources, if any.
+ *
+ * @param <T> type of Azure resource
+ */
+public class PageImpl<T> implements Page<T> {
+    /**
+     * The link to the next page.
+     */
+    @JsonProperty("nextLink")
+    private String nextPageLink;
+
+    /**
+     * The list of items.
+     */
+    @JsonProperty("value")
+    private List<T> items;
+
+    /**
+     * Gets the link to the next page.
+     *
+     * @return the link to the next page.
+     */
+    @Override
+    public String nextPageLink() {
+        return this.nextPageLink;
+    }
+
+    /**
+     * Gets the list of items.
+     *
+     * @return the list of items in {@link List}.
+     */
+    @Override
+    public List<T> items() {
+        return items;
+    }
+
+    /**
+     * Sets the link to the next page.
+     *
+     * @param nextPageLink the link to the next page.
+     * @return this Page object itself.
+     */
+    public PageImpl<T> setNextPageLink(String nextPageLink) {
+        this.nextPageLink = nextPageLink;
+        return this;
+    }
+
+    /**
+     * Sets the list of items.
+     *
+     * @param items the list of items in {@link List}.
+     * @return this Page object itself.
+     */
+    public PageImpl<T> setItems(List<T> items) {
+        this.items = items;
+        return this;
+    }
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicyImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicyImpl.java
new file mode 100644
index 000000000000..326c96b068b7
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicyImpl.java
@@ -0,0 +1,200 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policy;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicyStatus;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicyFactName;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicyEvaluatorType;
+import java.util.Map;
+
+class PolicyImpl extends CreatableUpdatableImpl<Policy, PolicyInner, PolicyImpl> implements Policy, Policy.Definition, Policy.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String policySetName;
+    private String name;
+
+    PolicyImpl(String name, DevTestLabsManager manager) {
+        super(name, new PolicyInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    PolicyImpl(PolicyInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.policySetName = IdParsingUtils.getValueFromIdByName(inner.id(), "policysets");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "policies");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<Policy> createResourceAsync() {
+        PolicysInner client = this.manager().inner().policys();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.policySetName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<Policy> updateResourceAsync() {
+        PolicysInner client = this.manager().inner().policys();
+        return client.patchResourceAsync(this.resourceGroupName, this.labName, this.policySetName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<PolicyInner> getInnerAsync() {
+        PolicysInner client = this.manager().inner().policys();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.policySetName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public String description() {
+        return this.inner().description();
+    }
+
+    @Override
+    public PolicyEvaluatorType evaluatorType() {
+        return this.inner().evaluatorType();
+    }
+
+    @Override
+    public String factData() {
+        return this.inner().factData();
+    }
+
+    @Override
+    public PolicyFactName factName() {
+        return this.inner().factName();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public PolicyStatus status() {
+        return this.inner().status();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String threshold() {
+        return this.inner().threshold();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public PolicyImpl withExistingPolicyset(String resourceGroupName, String labName, String policySetName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        this.policySetName = policySetName;
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withDescription(String description) {
+        this.inner().withDescription(description);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withEvaluatorType(PolicyEvaluatorType evaluatorType) {
+        this.inner().withEvaluatorType(evaluatorType);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withFactData(String factData) {
+        this.inner().withFactData(factData);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withFactName(PolicyFactName factName) {
+        this.inner().withFactName(factName);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withStatus(PolicyStatus status) {
+        this.inner().withStatus(status);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+    @Override
+    public PolicyImpl withThreshold(String threshold) {
+        this.inner().withThreshold(threshold);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicyInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicyInner.java
new file mode 100644
index 000000000000..b0eb7faa782b
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicyInner.java
@@ -0,0 +1,209 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicyStatus;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicyFactName;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicyEvaluatorType;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A Policy.
+ */
+@JsonFlatten
+public class PolicyInner extends Resource {
+    /**
+     * The description of the policy.
+     */
+    @JsonProperty(value = "properties.description")
+    private String description;
+
+    /**
+     * The status of the policy. Possible values include: 'Enabled',
+     * 'Disabled'.
+     */
+    @JsonProperty(value = "properties.status")
+    private PolicyStatus status;
+
+    /**
+     * The fact name of the policy. Possible values include:
+     * 'UserOwnedLabVmCount', 'LabVmCount', 'LabVmSize', 'GalleryImage',
+     * 'UserOwnedLabVmCountInSubnet'.
+     */
+    @JsonProperty(value = "properties.factName")
+    private PolicyFactName factName;
+
+    /**
+     * The fact data of the policy.
+     */
+    @JsonProperty(value = "properties.factData")
+    private String factData;
+
+    /**
+     * The threshold of the policy.
+     */
+    @JsonProperty(value = "properties.threshold")
+    private String threshold;
+
+    /**
+     * The evaluator type of the policy. Possible values include:
+     * 'AllowedValuesPolicy', 'MaxValuePolicy'.
+     */
+    @JsonProperty(value = "properties.evaluatorType")
+    private PolicyEvaluatorType evaluatorType;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the description of the policy.
+     *
+     * @return the description value
+     */
+    public String description() {
+        return this.description;
+    }
+
+    /**
+     * Set the description of the policy.
+     *
+     * @param description the description value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    /**
+     * Get the status of the policy. Possible values include: 'Enabled', 'Disabled'.
+     *
+     * @return the status value
+     */
+    public PolicyStatus status() {
+        return this.status;
+    }
+
+    /**
+     * Set the status of the policy. Possible values include: 'Enabled', 'Disabled'.
+     *
+     * @param status the status value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withStatus(PolicyStatus status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * Get the fact name of the policy. Possible values include: 'UserOwnedLabVmCount', 'LabVmCount', 'LabVmSize', 'GalleryImage', 'UserOwnedLabVmCountInSubnet'.
+     *
+     * @return the factName value
+     */
+    public PolicyFactName factName() {
+        return this.factName;
+    }
+
+    /**
+     * Set the fact name of the policy. Possible values include: 'UserOwnedLabVmCount', 'LabVmCount', 'LabVmSize', 'GalleryImage', 'UserOwnedLabVmCountInSubnet'.
+     *
+     * @param factName the factName value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withFactName(PolicyFactName factName) {
+        this.factName = factName;
+        return this;
+    }
+
+    /**
+     * Get the fact data of the policy.
+     *
+     * @return the factData value
+     */
+    public String factData() {
+        return this.factData;
+    }
+
+    /**
+     * Set the fact data of the policy.
+     *
+     * @param factData the factData value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withFactData(String factData) {
+        this.factData = factData;
+        return this;
+    }
+
+    /**
+     * Get the threshold of the policy.
+     *
+     * @return the threshold value
+     */
+    public String threshold() {
+        return this.threshold;
+    }
+
+    /**
+     * Set the threshold of the policy.
+     *
+     * @param threshold the threshold value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withThreshold(String threshold) {
+        this.threshold = threshold;
+        return this;
+    }
+
+    /**
+     * Get the evaluator type of the policy. Possible values include: 'AllowedValuesPolicy', 'MaxValuePolicy'.
+     *
+     * @return the evaluatorType value
+     */
+    public PolicyEvaluatorType evaluatorType() {
+        return this.evaluatorType;
+    }
+
+    /**
+     * Set the evaluator type of the policy. Possible values include: 'AllowedValuesPolicy', 'MaxValuePolicy'.
+     *
+     * @param evaluatorType the evaluatorType value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withEvaluatorType(PolicyEvaluatorType evaluatorType) {
+        this.evaluatorType = evaluatorType;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the PolicyInner object itself.
+     */
+    public PolicyInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicySetsImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicySetsImpl.java
new file mode 100644
index 000000000000..da6026fc7552
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicySetsImpl.java
@@ -0,0 +1,42 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ * abc
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicySets;
+import rx.functions.Func1;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EvaluatePoliciesResponse;
+
+class PolicySetsImpl extends WrapperImpl<PolicySetsInner> implements PolicySets {
+    private final DevTestLabsManager manager;
+
+    PolicySetsImpl(DevTestLabsManager manager) {
+        super(manager.inner().policySets());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<EvaluatePoliciesResponse> evaluatePoliciesAsync(String resourceGroupName, String labName, String name) {
+        PolicySetsInner client = this.inner();
+        return client.evaluatePoliciesAsync(resourceGroupName, labName, name)
+        .map(new Func1<EvaluatePoliciesResponseInner, EvaluatePoliciesResponse>() {
+            @Override
+            public EvaluatePoliciesResponse call(EvaluatePoliciesResponseInner inner) {
+                return new EvaluatePoliciesResponseImpl(inner, manager());
+            }
+        });
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicySetsInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicySetsInner.java
new file mode 100644
index 000000000000..18719b31c40d
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicySetsInner.java
@@ -0,0 +1,254 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EvaluatePoliciesProperties;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EvaluatePoliciesRequest;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.Query;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in PolicySets.
+ */
+public class PolicySetsInner {
+    /** The Retrofit service to perform REST calls. */
+    private PolicySetsService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of PolicySetsInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public PolicySetsInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(PolicySetsService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for PolicySets to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface PolicySetsService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.PolicySets evaluatePolicies" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/policysets/{name}/evaluatePolicies")
+        Observable<Response<ResponseBody>> evaluatePolicies(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Body EvaluatePoliciesRequest evaluatePoliciesRequest, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the EvaluatePoliciesResponseInner object if successful.
+     */
+    public EvaluatePoliciesResponseInner evaluatePolicies(String resourceGroupName, String labName, String name) {
+        return evaluatePoliciesWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<EvaluatePoliciesResponseInner> evaluatePoliciesAsync(String resourceGroupName, String labName, String name, final ServiceCallback<EvaluatePoliciesResponseInner> serviceCallback) {
+        return ServiceFuture.fromResponse(evaluatePoliciesWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the EvaluatePoliciesResponseInner object
+     */
+    public Observable<EvaluatePoliciesResponseInner> evaluatePoliciesAsync(String resourceGroupName, String labName, String name) {
+        return evaluatePoliciesWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<EvaluatePoliciesResponseInner>, EvaluatePoliciesResponseInner>() {
+            @Override
+            public EvaluatePoliciesResponseInner call(ServiceResponse<EvaluatePoliciesResponseInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the EvaluatePoliciesResponseInner object
+     */
+    public Observable<ServiceResponse<EvaluatePoliciesResponseInner>> evaluatePoliciesWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final List<EvaluatePoliciesProperties> policies = null;
+        EvaluatePoliciesRequest evaluatePoliciesRequest = new EvaluatePoliciesRequest();
+        evaluatePoliciesRequest.withPolicies(null);
+        return service.evaluatePolicies(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), evaluatePoliciesRequest, this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<EvaluatePoliciesResponseInner>>>() {
+                @Override
+                public Observable<ServiceResponse<EvaluatePoliciesResponseInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<EvaluatePoliciesResponseInner> clientResponse = evaluatePoliciesDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @param policies Policies to evaluate.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the EvaluatePoliciesResponseInner object if successful.
+     */
+    public EvaluatePoliciesResponseInner evaluatePolicies(String resourceGroupName, String labName, String name, List<EvaluatePoliciesProperties> policies) {
+        return evaluatePoliciesWithServiceResponseAsync(resourceGroupName, labName, name, policies).toBlocking().single().body();
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @param policies Policies to evaluate.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<EvaluatePoliciesResponseInner> evaluatePoliciesAsync(String resourceGroupName, String labName, String name, List<EvaluatePoliciesProperties> policies, final ServiceCallback<EvaluatePoliciesResponseInner> serviceCallback) {
+        return ServiceFuture.fromResponse(evaluatePoliciesWithServiceResponseAsync(resourceGroupName, labName, name, policies), serviceCallback);
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @param policies Policies to evaluate.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the EvaluatePoliciesResponseInner object
+     */
+    public Observable<EvaluatePoliciesResponseInner> evaluatePoliciesAsync(String resourceGroupName, String labName, String name, List<EvaluatePoliciesProperties> policies) {
+        return evaluatePoliciesWithServiceResponseAsync(resourceGroupName, labName, name, policies).map(new Func1<ServiceResponse<EvaluatePoliciesResponseInner>, EvaluatePoliciesResponseInner>() {
+            @Override
+            public EvaluatePoliciesResponseInner call(ServiceResponse<EvaluatePoliciesResponseInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Evaluates Lab Policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the policy set.
+     * @param policies Policies to evaluate.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the EvaluatePoliciesResponseInner object
+     */
+    public Observable<ServiceResponse<EvaluatePoliciesResponseInner>> evaluatePoliciesWithServiceResponseAsync(String resourceGroupName, String labName, String name, List<EvaluatePoliciesProperties> policies) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(policies);
+        EvaluatePoliciesRequest evaluatePoliciesRequest = new EvaluatePoliciesRequest();
+        evaluatePoliciesRequest.withPolicies(policies);
+        return service.evaluatePolicies(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), evaluatePoliciesRequest, this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<EvaluatePoliciesResponseInner>>>() {
+                @Override
+                public Observable<ServiceResponse<EvaluatePoliciesResponseInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<EvaluatePoliciesResponseInner> clientResponse = evaluatePoliciesDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<EvaluatePoliciesResponseInner> evaluatePoliciesDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<EvaluatePoliciesResponseInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<EvaluatePoliciesResponseInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicysImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicysImpl.java
new file mode 100644
index 000000000000..4dd4819f27ba
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicysImpl.java
@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policy;
+
+class PolicysImpl extends WrapperImpl<PolicysInner> implements Policys {
+    private final DevTestLabsManager manager;
+
+    PolicysImpl(DevTestLabsManager manager) {
+        super(manager.inner().policys());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public PolicyImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private PolicyImpl wrapModel(PolicyInner inner) {
+        return  new PolicyImpl(inner, manager());
+    }
+
+    private PolicyImpl wrapModel(String name) {
+        return new PolicyImpl(name, this.manager());
+    }
+
+    @Override
+    public Observable<Policy> listAsync(final String resourceGroupName, final String labName, final String policySetName) {
+        PolicysInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName, policySetName)
+        .flatMapIterable(new Func1<Page<PolicyInner>, Iterable<PolicyInner>>() {
+            @Override
+            public Iterable<PolicyInner> call(Page<PolicyInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<PolicyInner, Policy>() {
+            @Override
+            public Policy call(PolicyInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<Policy> getResourceAsync(String resourceGroupName, String labName, String policySetName, String name) {
+        PolicysInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, policySetName, name)
+        .flatMap(new Func1<PolicyInner, Observable<Policy>>() {
+            @Override
+            public Observable<Policy> call(PolicyInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((Policy)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String policySetName, String name) {
+        PolicysInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, policySetName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicysInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicysInner.java
new file mode 100644
index 000000000000..d54a6bd113f8
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/PolicysInner.java
@@ -0,0 +1,892 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in Policys.
+ */
+public class PolicysInner {
+    /** The Retrofit service to perform REST calls. */
+    private PolicysService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of PolicysInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public PolicysInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(PolicysService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for Policys to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface PolicysService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/policysets/{policySetName}/policies")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("policySetName") String policySetName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/policysets/{policySetName}/policies/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("policySetName") String policySetName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/policysets/{policySetName}/policies/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("policySetName") String policySetName, @Path("name") String name, @Body PolicyInner policy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/policysets/{policySetName}/policies/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("policySetName") String policySetName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys patchResource" })
+        @PATCH("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/policysets/{policySetName}/policies/{name}")
+        Observable<Response<ResponseBody>> patchResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("policySetName") String policySetName, @Path("name") String name, @Body PolicyInner policy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Policys listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;PolicyInner&gt; object if successful.
+     */
+    public PagedList<PolicyInner> list(final String resourceGroupName, final String labName, final String policySetName) {
+        ServiceResponse<Page<PolicyInner>> response = listSinglePageAsync(resourceGroupName, labName, policySetName).toBlocking().single();
+        return new PagedList<PolicyInner>(response.body()) {
+            @Override
+            public Page<PolicyInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<PolicyInner>> listAsync(final String resourceGroupName, final String labName, final String policySetName, final ListOperationCallback<PolicyInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, policySetName),
+            new Func1<String, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;PolicyInner&gt; object
+     */
+    public Observable<Page<PolicyInner>> listAsync(final String resourceGroupName, final String labName, final String policySetName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, policySetName)
+            .map(new Func1<ServiceResponse<Page<PolicyInner>>, Page<PolicyInner>>() {
+                @Override
+                public Page<PolicyInner> call(ServiceResponse<Page<PolicyInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;PolicyInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<PolicyInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String policySetName) {
+        return listSinglePageAsync(resourceGroupName, labName, policySetName)
+            .concatMap(new Func1<ServiceResponse<Page<PolicyInner>>, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(ServiceResponse<Page<PolicyInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;PolicyInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<PolicyInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String policySetName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (policySetName == null) {
+            throw new IllegalArgumentException("Parameter policySetName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, policySetName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<PolicyInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<PolicyInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;PolicyInner&gt; object if successful.
+     */
+    public PagedList<PolicyInner> list(final String resourceGroupName, final String labName, final String policySetName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<PolicyInner>> response = listSinglePageAsync(resourceGroupName, labName, policySetName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<PolicyInner>(response.body()) {
+            @Override
+            public Page<PolicyInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<PolicyInner>> listAsync(final String resourceGroupName, final String labName, final String policySetName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<PolicyInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, policySetName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;PolicyInner&gt; object
+     */
+    public Observable<Page<PolicyInner>> listAsync(final String resourceGroupName, final String labName, final String policySetName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, policySetName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<PolicyInner>>, Page<PolicyInner>>() {
+                @Override
+                public Page<PolicyInner> call(ServiceResponse<Page<PolicyInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;PolicyInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<PolicyInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String policySetName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, policySetName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<PolicyInner>>, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(ServiceResponse<Page<PolicyInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+    ServiceResponse<PageImpl<PolicyInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<PolicyInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<PolicyInner>> * @param policySetName The name of the policy set.
+    ServiceResponse<PageImpl<PolicyInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<PolicyInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<PolicyInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;PolicyInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<PolicyInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String policySetName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (policySetName == null) {
+            throw new IllegalArgumentException("Parameter policySetName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, policySetName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<PolicyInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<PolicyInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<PolicyInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<PolicyInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<PolicyInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PolicyInner object if successful.
+     */
+    public PolicyInner getResource(String resourceGroupName, String labName, String policySetName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<PolicyInner> getResourceAsync(String resourceGroupName, String labName, String policySetName, String name, final ServiceCallback<PolicyInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name), serviceCallback);
+    }
+
+    /**
+     * Get policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PolicyInner object
+     */
+    public Observable<PolicyInner> getResourceAsync(String resourceGroupName, String labName, String policySetName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name).map(new Func1<ServiceResponse<PolicyInner>, PolicyInner>() {
+            @Override
+            public PolicyInner call(ServiceResponse<PolicyInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PolicyInner object
+     */
+    public Observable<ServiceResponse<PolicyInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String policySetName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (policySetName == null) {
+            throw new IllegalArgumentException("Parameter policySetName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, policySetName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<PolicyInner>>>() {
+                @Override
+                public Observable<ServiceResponse<PolicyInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PolicyInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PolicyInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PolicyInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PolicyInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PolicyInner object if successful.
+     */
+    public PolicyInner createOrUpdateResource(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name, policy).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<PolicyInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy, final ServiceCallback<PolicyInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name, policy), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PolicyInner object
+     */
+    public Observable<PolicyInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name, policy).map(new Func1<ServiceResponse<PolicyInner>, PolicyInner>() {
+            @Override
+            public PolicyInner call(ServiceResponse<PolicyInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PolicyInner object
+     */
+    public Observable<ServiceResponse<PolicyInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (policySetName == null) {
+            throw new IllegalArgumentException("Parameter policySetName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (policy == null) {
+            throw new IllegalArgumentException("Parameter policy is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(policy);
+        return service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, policySetName, name, policy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<PolicyInner>>>() {
+                @Override
+                public Observable<ServiceResponse<PolicyInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PolicyInner> clientResponse = createOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PolicyInner> createOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PolicyInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PolicyInner>() { }.getType())
+                .register(201, new TypeToken<PolicyInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String policySetName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String policySetName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name), serviceCallback);
+    }
+
+    /**
+     * Delete policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String policySetName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete policy.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String policySetName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (policySetName == null) {
+            throw new IllegalArgumentException("Parameter policySetName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, policySetName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = deleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> deleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Modify properties of policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PolicyInner object if successful.
+     */
+    public PolicyInner patchResource(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name, policy).toBlocking().single().body();
+    }
+
+    /**
+     * Modify properties of policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<PolicyInner> patchResourceAsync(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy, final ServiceCallback<PolicyInner> serviceCallback) {
+        return ServiceFuture.fromResponse(patchResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name, policy), serviceCallback);
+    }
+
+    /**
+     * Modify properties of policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PolicyInner object
+     */
+    public Observable<PolicyInner> patchResourceAsync(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, policySetName, name, policy).map(new Func1<ServiceResponse<PolicyInner>, PolicyInner>() {
+            @Override
+            public PolicyInner call(ServiceResponse<PolicyInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Modify properties of policies.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param policySetName The name of the policy set.
+     * @param name The name of the policy.
+     * @param policy the PolicyInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PolicyInner object
+     */
+    public Observable<ServiceResponse<PolicyInner>> patchResourceWithServiceResponseAsync(String resourceGroupName, String labName, String policySetName, String name, PolicyInner policy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (policySetName == null) {
+            throw new IllegalArgumentException("Parameter policySetName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (policy == null) {
+            throw new IllegalArgumentException("Parameter policy is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(policy);
+        return service.patchResource(this.client.subscriptionId(), resourceGroupName, labName, policySetName, name, policy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<PolicyInner>>>() {
+                @Override
+                public Observable<ServiceResponse<PolicyInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PolicyInner> clientResponse = patchResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PolicyInner> patchResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PolicyInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PolicyInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List policies.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;PolicyInner&gt; object if successful.
+     */
+    public PagedList<PolicyInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<PolicyInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<PolicyInner>(response.body()) {
+            @Override
+            public Page<PolicyInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List policies.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<PolicyInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<PolicyInner>> serviceFuture, final ListOperationCallback<PolicyInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List policies.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;PolicyInner&gt; object
+     */
+    public Observable<Page<PolicyInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<PolicyInner>>, Page<PolicyInner>>() {
+                @Override
+                public Page<PolicyInner> call(ServiceResponse<Page<PolicyInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;PolicyInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<PolicyInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<PolicyInner>>, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(ServiceResponse<Page<PolicyInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List policies.
+     *
+    ServiceResponse<PageImpl<PolicyInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;PolicyInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<PolicyInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<PolicyInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<PolicyInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<PolicyInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<PolicyInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<PolicyInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<PolicyInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<PolicyInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ScheduleImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ScheduleImpl.java
new file mode 100644
index 000000000000..7d33be30cff8
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ScheduleImpl.java
@@ -0,0 +1,199 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedule;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EnableStatus;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.TaskType;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.WeekDetails;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.DayDetails;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.HourDetails;
+import java.util.Map;
+
+class ScheduleImpl extends CreatableUpdatableImpl<Schedule, ScheduleInner, ScheduleImpl> implements Schedule, Schedule.Definition, Schedule.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    ScheduleImpl(String name, DevTestLabsManager manager) {
+        super(name, new ScheduleInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    ScheduleImpl(ScheduleInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "schedules");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<Schedule> createResourceAsync() {
+        SchedulesInner client = this.manager().inner().schedules();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<Schedule> updateResourceAsync() {
+        SchedulesInner client = this.manager().inner().schedules();
+        return client.patchResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<ScheduleInner> getInnerAsync() {
+        SchedulesInner client = this.manager().inner().schedules();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public DayDetails dailyRecurrence() {
+        return this.inner().dailyRecurrence();
+    }
+
+    @Override
+    public HourDetails hourlyRecurrence() {
+        return this.inner().hourlyRecurrence();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public EnableStatus status() {
+        return this.inner().status();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public TaskType taskType() {
+        return this.inner().taskType();
+    }
+
+    @Override
+    public String timeZoneId() {
+        return this.inner().timeZoneId();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public WeekDetails weeklyRecurrence() {
+        return this.inner().weeklyRecurrence();
+    }
+
+    @Override
+    public ScheduleImpl withExistingLab(String resourceGroupName, String labName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withDailyRecurrence(DayDetails dailyRecurrence) {
+        this.inner().withDailyRecurrence(dailyRecurrence);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withHourlyRecurrence(HourDetails hourlyRecurrence) {
+        this.inner().withHourlyRecurrence(hourlyRecurrence);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withStatus(EnableStatus status) {
+        this.inner().withStatus(status);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withTaskType(TaskType taskType) {
+        this.inner().withTaskType(taskType);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withTimeZoneId(String timeZoneId) {
+        this.inner().withTimeZoneId(timeZoneId);
+        return this;
+    }
+
+    @Override
+    public ScheduleImpl withWeeklyRecurrence(WeekDetails weeklyRecurrence) {
+        this.inner().withWeeklyRecurrence(weeklyRecurrence);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ScheduleInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ScheduleInner.java
new file mode 100644
index 000000000000..c45c80849d36
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/ScheduleInner.java
@@ -0,0 +1,209 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.EnableStatus;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.TaskType;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.WeekDetails;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.DayDetails;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.HourDetails;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A schedule.
+ */
+@JsonFlatten
+public class ScheduleInner extends Resource {
+    /**
+     * The status of the schedule. Possible values include: 'Enabled',
+     * 'Disabled'.
+     */
+    @JsonProperty(value = "properties.status")
+    private EnableStatus status;
+
+    /**
+     * The task type of the schedule. Possible values include:
+     * 'LabVmsShutdownTask', 'LabVmsStartupTask', 'LabBillingTask'.
+     */
+    @JsonProperty(value = "properties.taskType")
+    private TaskType taskType;
+
+    /**
+     * The weekly recurrence of the schedule.
+     */
+    @JsonProperty(value = "properties.weeklyRecurrence")
+    private WeekDetails weeklyRecurrence;
+
+    /**
+     * The daily recurrence of the schedule.
+     */
+    @JsonProperty(value = "properties.dailyRecurrence")
+    private DayDetails dailyRecurrence;
+
+    /**
+     * The hourly recurrence of the schedule.
+     */
+    @JsonProperty(value = "properties.hourlyRecurrence")
+    private HourDetails hourlyRecurrence;
+
+    /**
+     * The time zone id.
+     */
+    @JsonProperty(value = "properties.timeZoneId")
+    private String timeZoneId;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the status of the schedule. Possible values include: 'Enabled', 'Disabled'.
+     *
+     * @return the status value
+     */
+    public EnableStatus status() {
+        return this.status;
+    }
+
+    /**
+     * Set the status of the schedule. Possible values include: 'Enabled', 'Disabled'.
+     *
+     * @param status the status value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withStatus(EnableStatus status) {
+        this.status = status;
+        return this;
+    }
+
+    /**
+     * Get the task type of the schedule. Possible values include: 'LabVmsShutdownTask', 'LabVmsStartupTask', 'LabBillingTask'.
+     *
+     * @return the taskType value
+     */
+    public TaskType taskType() {
+        return this.taskType;
+    }
+
+    /**
+     * Set the task type of the schedule. Possible values include: 'LabVmsShutdownTask', 'LabVmsStartupTask', 'LabBillingTask'.
+     *
+     * @param taskType the taskType value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withTaskType(TaskType taskType) {
+        this.taskType = taskType;
+        return this;
+    }
+
+    /**
+     * Get the weekly recurrence of the schedule.
+     *
+     * @return the weeklyRecurrence value
+     */
+    public WeekDetails weeklyRecurrence() {
+        return this.weeklyRecurrence;
+    }
+
+    /**
+     * Set the weekly recurrence of the schedule.
+     *
+     * @param weeklyRecurrence the weeklyRecurrence value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withWeeklyRecurrence(WeekDetails weeklyRecurrence) {
+        this.weeklyRecurrence = weeklyRecurrence;
+        return this;
+    }
+
+    /**
+     * Get the daily recurrence of the schedule.
+     *
+     * @return the dailyRecurrence value
+     */
+    public DayDetails dailyRecurrence() {
+        return this.dailyRecurrence;
+    }
+
+    /**
+     * Set the daily recurrence of the schedule.
+     *
+     * @param dailyRecurrence the dailyRecurrence value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withDailyRecurrence(DayDetails dailyRecurrence) {
+        this.dailyRecurrence = dailyRecurrence;
+        return this;
+    }
+
+    /**
+     * Get the hourly recurrence of the schedule.
+     *
+     * @return the hourlyRecurrence value
+     */
+    public HourDetails hourlyRecurrence() {
+        return this.hourlyRecurrence;
+    }
+
+    /**
+     * Set the hourly recurrence of the schedule.
+     *
+     * @param hourlyRecurrence the hourlyRecurrence value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withHourlyRecurrence(HourDetails hourlyRecurrence) {
+        this.hourlyRecurrence = hourlyRecurrence;
+        return this;
+    }
+
+    /**
+     * Get the time zone id.
+     *
+     * @return the timeZoneId value
+     */
+    public String timeZoneId() {
+        return this.timeZoneId;
+    }
+
+    /**
+     * Set the time zone id.
+     *
+     * @param timeZoneId the timeZoneId value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withTimeZoneId(String timeZoneId) {
+        this.timeZoneId = timeZoneId;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the ScheduleInner object itself.
+     */
+    public ScheduleInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/SchedulesImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/SchedulesImpl.java
new file mode 100644
index 000000000000..e1b9056f16f7
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/SchedulesImpl.java
@@ -0,0 +1,91 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedule;
+
+class SchedulesImpl extends WrapperImpl<SchedulesInner> implements Schedules {
+    private final DevTestLabsManager manager;
+
+    SchedulesImpl(DevTestLabsManager manager) {
+        super(manager.inner().schedules());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public ScheduleImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private ScheduleImpl wrapModel(ScheduleInner inner) {
+        return  new ScheduleImpl(inner, manager());
+    }
+
+    private ScheduleImpl wrapModel(String name) {
+        return new ScheduleImpl(name, this.manager());
+    }
+
+    @Override
+    public Completable executeAsync(String resourceGroupName, String labName, String name) {
+        SchedulesInner client = this.inner();
+        return client.executeAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+    @Override
+    public Observable<Schedule> listAsync(final String resourceGroupName, final String labName) {
+        SchedulesInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<ScheduleInner>, Iterable<ScheduleInner>>() {
+            @Override
+            public Iterable<ScheduleInner> call(Page<ScheduleInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<ScheduleInner, Schedule>() {
+            @Override
+            public Schedule call(ScheduleInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<Schedule> getResourceAsync(String resourceGroupName, String labName, String name) {
+        SchedulesInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<ScheduleInner, Observable<Schedule>>() {
+            @Override
+            public Observable<Schedule> call(ScheduleInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((Schedule)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        SchedulesInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/SchedulesInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/SchedulesInner.java
new file mode 100644
index 000000000000..9ed5a480c399
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/SchedulesInner.java
@@ -0,0 +1,1192 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in Schedules.
+ */
+public class SchedulesInner {
+    /** The Retrofit service to perform REST calls. */
+    private SchedulesService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of SchedulesInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public SchedulesInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(SchedulesService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for Schedules to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface SchedulesService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body ScheduleInner schedule, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules beginCreateOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}")
+        Observable<Response<ResponseBody>> beginCreateOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body ScheduleInner schedule, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules beginDeleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> beginDeleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules patchResource" })
+        @PATCH("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}")
+        Observable<Response<ResponseBody>> patchResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body ScheduleInner schedule, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules execute" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}/execute")
+        Observable<Response<ResponseBody>> execute(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules beginExecute" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/schedules/{name}/execute")
+        Observable<Response<ResponseBody>> beginExecute(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Schedules listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ScheduleInner&gt; object if successful.
+     */
+    public PagedList<ScheduleInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<ScheduleInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<ScheduleInner>(response.body()) {
+            @Override
+            public Page<ScheduleInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ScheduleInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<ScheduleInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ScheduleInner&gt; object
+     */
+    public Observable<Page<ScheduleInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<ScheduleInner>>, Page<ScheduleInner>>() {
+                @Override
+                public Page<ScheduleInner> call(ServiceResponse<Page<ScheduleInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ScheduleInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ScheduleInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<ScheduleInner>>, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(ServiceResponse<Page<ScheduleInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ScheduleInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ScheduleInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ScheduleInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ScheduleInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ScheduleInner&gt; object if successful.
+     */
+    public PagedList<ScheduleInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<ScheduleInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<ScheduleInner>(response.body()) {
+            @Override
+            public Page<ScheduleInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ScheduleInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<ScheduleInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ScheduleInner&gt; object
+     */
+    public Observable<Page<ScheduleInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<ScheduleInner>>, Page<ScheduleInner>>() {
+                @Override
+                public Page<ScheduleInner> call(ServiceResponse<Page<ScheduleInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ScheduleInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ScheduleInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<ScheduleInner>>, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(ServiceResponse<Page<ScheduleInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+    ServiceResponse<PageImpl<ScheduleInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<ScheduleInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<ScheduleInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<ScheduleInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<ScheduleInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ScheduleInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ScheduleInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ScheduleInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ScheduleInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<ScheduleInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<ScheduleInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<ScheduleInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get schedule.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ScheduleInner object if successful.
+     */
+    public ScheduleInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get schedule.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ScheduleInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<ScheduleInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get schedule.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ScheduleInner object
+     */
+    public Observable<ScheduleInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<ScheduleInner>, ScheduleInner>() {
+            @Override
+            public ScheduleInner call(ServiceResponse<ScheduleInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get schedule.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ScheduleInner object
+     */
+    public Observable<ServiceResponse<ScheduleInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ScheduleInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ScheduleInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ScheduleInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ScheduleInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ScheduleInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ScheduleInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ScheduleInner object if successful.
+     */
+    public ScheduleInner createOrUpdateResource(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule).toBlocking().last().body();
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ScheduleInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule, final ServiceCallback<ScheduleInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ScheduleInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule).map(new Func1<ServiceResponse<ScheduleInner>, ScheduleInner>() {
+            @Override
+            public ScheduleInner call(ServiceResponse<ScheduleInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<ScheduleInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (schedule == null) {
+            throw new IllegalArgumentException("Parameter schedule is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(schedule);
+        Observable<Response<ResponseBody>> observable = service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, schedule, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPutOrPatchResultAsync(observable, new TypeToken<ScheduleInner>() { }.getType());
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ScheduleInner object if successful.
+     */
+    public ScheduleInner beginCreateOrUpdateResource(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ScheduleInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule, final ServiceCallback<ScheduleInner> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ScheduleInner object
+     */
+    public Observable<ScheduleInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule).map(new Func1<ServiceResponse<ScheduleInner>, ScheduleInner>() {
+            @Override
+            public ScheduleInner call(ServiceResponse<ScheduleInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ScheduleInner object
+     */
+    public Observable<ServiceResponse<ScheduleInner>> beginCreateOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (schedule == null) {
+            throw new IllegalArgumentException("Parameter schedule is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(schedule);
+        return service.beginCreateOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, schedule, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ScheduleInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ScheduleInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ScheduleInner> clientResponse = beginCreateOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ScheduleInner> beginCreateOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ScheduleInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ScheduleInner>() { }.getType())
+                .register(201, new TypeToken<ScheduleInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginDeleteResource(String resourceGroupName, String labName, String name) {
+        beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginDeleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginDeleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginDeleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginDeleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Modify properties of schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the ScheduleInner object if successful.
+     */
+    public ScheduleInner patchResource(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule).toBlocking().single().body();
+    }
+
+    /**
+     * Modify properties of schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<ScheduleInner> patchResourceAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule, final ServiceCallback<ScheduleInner> serviceCallback) {
+        return ServiceFuture.fromResponse(patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule), serviceCallback);
+    }
+
+    /**
+     * Modify properties of schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ScheduleInner object
+     */
+    public Observable<ScheduleInner> patchResourceAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, schedule).map(new Func1<ServiceResponse<ScheduleInner>, ScheduleInner>() {
+            @Override
+            public ScheduleInner call(ServiceResponse<ScheduleInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Modify properties of schedules.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param schedule the ScheduleInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the ScheduleInner object
+     */
+    public Observable<ServiceResponse<ScheduleInner>> patchResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, ScheduleInner schedule) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (schedule == null) {
+            throw new IllegalArgumentException("Parameter schedule is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(schedule);
+        return service.patchResource(this.client.subscriptionId(), resourceGroupName, labName, name, schedule, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<ScheduleInner>>>() {
+                @Override
+                public Observable<ServiceResponse<ScheduleInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<ScheduleInner> clientResponse = patchResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<ScheduleInner> patchResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<ScheduleInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<ScheduleInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void execute(String resourceGroupName, String labName, String name) {
+        executeWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> executeAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(executeWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> executeAsync(String resourceGroupName, String labName, String name) {
+        return executeWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> executeWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.execute(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginExecute(String resourceGroupName, String labName, String name) {
+        beginExecuteWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginExecuteAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginExecuteWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginExecuteAsync(String resourceGroupName, String labName, String name) {
+        return beginExecuteWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Execute a schedule. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the schedule.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginExecuteWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginExecute(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginExecuteDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginExecuteDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;ScheduleInner&gt; object if successful.
+     */
+    public PagedList<ScheduleInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<ScheduleInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<ScheduleInner>(response.body()) {
+            @Override
+            public Page<ScheduleInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<ScheduleInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<ScheduleInner>> serviceFuture, final ListOperationCallback<ScheduleInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ScheduleInner&gt; object
+     */
+    public Observable<Page<ScheduleInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<ScheduleInner>>, Page<ScheduleInner>>() {
+                @Override
+                public Page<ScheduleInner> call(ServiceResponse<Page<ScheduleInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;ScheduleInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<ScheduleInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<ScheduleInner>>, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(ServiceResponse<Page<ScheduleInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List schedules.
+     *
+    ServiceResponse<PageImpl<ScheduleInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;ScheduleInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<ScheduleInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<ScheduleInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<ScheduleInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<ScheduleInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<ScheduleInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<ScheduleInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<ScheduleInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<ScheduleInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualMachinesImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualMachinesImpl.java
new file mode 100644
index 000000000000..974b1f16e927
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualMachinesImpl.java
@@ -0,0 +1,103 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.LabVirtualMachine;
+
+class VirtualMachinesImpl extends WrapperImpl<VirtualMachinesInner> implements VirtualMachines {
+    private final DevTestLabsManager manager;
+
+    VirtualMachinesImpl(DevTestLabsManager manager) {
+        super(manager.inner().virtualMachines());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public LabVirtualMachineImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private LabVirtualMachineImpl wrapModel(LabVirtualMachineInner inner) {
+        return  new LabVirtualMachineImpl(inner, manager());
+    }
+
+    private LabVirtualMachineImpl wrapModel(String name) {
+        return new LabVirtualMachineImpl(name, this.manager());
+    }
+
+    @Override
+    public Completable applyArtifactsAsync(String resourceGroupName, String labName, String name) {
+        VirtualMachinesInner client = this.inner();
+        return client.applyArtifactsAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+    @Override
+    public Completable startAsync(String resourceGroupName, String labName, String name) {
+        VirtualMachinesInner client = this.inner();
+        return client.startAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+    @Override
+    public Completable stopAsync(String resourceGroupName, String labName, String name) {
+        VirtualMachinesInner client = this.inner();
+        return client.stopAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+    @Override
+    public Observable<LabVirtualMachine> listAsync(final String resourceGroupName, final String labName) {
+        VirtualMachinesInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<LabVirtualMachineInner>, Iterable<LabVirtualMachineInner>>() {
+            @Override
+            public Iterable<LabVirtualMachineInner> call(Page<LabVirtualMachineInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<LabVirtualMachineInner, LabVirtualMachine>() {
+            @Override
+            public LabVirtualMachine call(LabVirtualMachineInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<LabVirtualMachine> getResourceAsync(String resourceGroupName, String labName, String name) {
+        VirtualMachinesInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<LabVirtualMachineInner, Observable<LabVirtualMachine>>() {
+            @Override
+            public Observable<LabVirtualMachine> call(LabVirtualMachineInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((LabVirtualMachine)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        VirtualMachinesInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualMachinesInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualMachinesInner.java
new file mode 100644
index 000000000000..ea0f12aea120
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualMachinesInner.java
@@ -0,0 +1,1725 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ApplyArtifactsRequest;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.ArtifactInstallProperties;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import retrofit2.http.POST;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in VirtualMachines.
+ */
+public class VirtualMachinesInner {
+    /** The Retrofit service to perform REST calls. */
+    private VirtualMachinesService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of VirtualMachinesInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public VirtualMachinesInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(VirtualMachinesService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for VirtualMachines to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface VirtualMachinesService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body LabVirtualMachineInner labVirtualMachine, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines beginCreateOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}")
+        Observable<Response<ResponseBody>> beginCreateOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body LabVirtualMachineInner labVirtualMachine, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines beginDeleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> beginDeleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines patchResource" })
+        @PATCH("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}")
+        Observable<Response<ResponseBody>> patchResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body LabVirtualMachineInner labVirtualMachine, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines applyArtifacts" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}/applyArtifacts")
+        Observable<Response<ResponseBody>> applyArtifacts(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Body ApplyArtifactsRequest applyArtifactsRequest, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines beginApplyArtifacts" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}/applyArtifacts")
+        Observable<Response<ResponseBody>> beginApplyArtifacts(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Body ApplyArtifactsRequest applyArtifactsRequest, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines start" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}/start")
+        Observable<Response<ResponseBody>> start(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines beginStart" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}/start")
+        Observable<Response<ResponseBody>> beginStart(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines stop" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}/stop")
+        Observable<Response<ResponseBody>> stop(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines beginStop" })
+        @POST("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualmachines/{name}/stop")
+        Observable<Response<ResponseBody>> beginStop(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualMachines listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabVirtualMachineInner&gt; object if successful.
+     */
+    public PagedList<LabVirtualMachineInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<LabVirtualMachineInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<LabVirtualMachineInner>(response.body()) {
+            @Override
+            public Page<LabVirtualMachineInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabVirtualMachineInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<LabVirtualMachineInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVirtualMachineInner&gt; object
+     */
+    public Observable<Page<LabVirtualMachineInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<LabVirtualMachineInner>>, Page<LabVirtualMachineInner>>() {
+                @Override
+                public Page<LabVirtualMachineInner> call(ServiceResponse<Page<LabVirtualMachineInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVirtualMachineInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<LabVirtualMachineInner>>, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(ServiceResponse<Page<LabVirtualMachineInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabVirtualMachineInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabVirtualMachineInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabVirtualMachineInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabVirtualMachineInner&gt; object if successful.
+     */
+    public PagedList<LabVirtualMachineInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<LabVirtualMachineInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<LabVirtualMachineInner>(response.body()) {
+            @Override
+            public Page<LabVirtualMachineInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabVirtualMachineInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<LabVirtualMachineInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVirtualMachineInner&gt; object
+     */
+    public Observable<Page<LabVirtualMachineInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<LabVirtualMachineInner>>, Page<LabVirtualMachineInner>>() {
+                @Override
+                public Page<LabVirtualMachineInner> call(ServiceResponse<Page<LabVirtualMachineInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVirtualMachineInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<LabVirtualMachineInner>>, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(ServiceResponse<Page<LabVirtualMachineInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+    ServiceResponse<PageImpl<LabVirtualMachineInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<LabVirtualMachineInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<LabVirtualMachineInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<LabVirtualMachineInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<LabVirtualMachineInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabVirtualMachineInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabVirtualMachineInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabVirtualMachineInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabVirtualMachineInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabVirtualMachineInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabVirtualMachineInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get virtual machine.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabVirtualMachineInner object if successful.
+     */
+    public LabVirtualMachineInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get virtual machine.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabVirtualMachineInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<LabVirtualMachineInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get virtual machine.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabVirtualMachineInner object
+     */
+    public Observable<LabVirtualMachineInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<LabVirtualMachineInner>, LabVirtualMachineInner>() {
+            @Override
+            public LabVirtualMachineInner call(ServiceResponse<LabVirtualMachineInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get virtual machine.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabVirtualMachineInner object
+     */
+    public Observable<ServiceResponse<LabVirtualMachineInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<LabVirtualMachineInner>>>() {
+                @Override
+                public Observable<ServiceResponse<LabVirtualMachineInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<LabVirtualMachineInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<LabVirtualMachineInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<LabVirtualMachineInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<LabVirtualMachineInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabVirtualMachineInner object if successful.
+     */
+    public LabVirtualMachineInner createOrUpdateResource(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine).toBlocking().last().body();
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabVirtualMachineInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine, final ServiceCallback<LabVirtualMachineInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<LabVirtualMachineInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine).map(new Func1<ServiceResponse<LabVirtualMachineInner>, LabVirtualMachineInner>() {
+            @Override
+            public LabVirtualMachineInner call(ServiceResponse<LabVirtualMachineInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<LabVirtualMachineInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (labVirtualMachine == null) {
+            throw new IllegalArgumentException("Parameter labVirtualMachine is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(labVirtualMachine);
+        Observable<Response<ResponseBody>> observable = service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, labVirtualMachine, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPutOrPatchResultAsync(observable, new TypeToken<LabVirtualMachineInner>() { }.getType());
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabVirtualMachineInner object if successful.
+     */
+    public LabVirtualMachineInner beginCreateOrUpdateResource(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabVirtualMachineInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine, final ServiceCallback<LabVirtualMachineInner> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabVirtualMachineInner object
+     */
+    public Observable<LabVirtualMachineInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine).map(new Func1<ServiceResponse<LabVirtualMachineInner>, LabVirtualMachineInner>() {
+            @Override
+            public LabVirtualMachineInner call(ServiceResponse<LabVirtualMachineInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing Virtual Machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabVirtualMachineInner object
+     */
+    public Observable<ServiceResponse<LabVirtualMachineInner>> beginCreateOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (labVirtualMachine == null) {
+            throw new IllegalArgumentException("Parameter labVirtualMachine is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(labVirtualMachine);
+        return service.beginCreateOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, labVirtualMachine, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<LabVirtualMachineInner>>>() {
+                @Override
+                public Observable<ServiceResponse<LabVirtualMachineInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<LabVirtualMachineInner> clientResponse = beginCreateOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<LabVirtualMachineInner> beginCreateOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<LabVirtualMachineInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<LabVirtualMachineInner>() { }.getType())
+                .register(201, new TypeToken<LabVirtualMachineInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginDeleteResource(String resourceGroupName, String labName, String name) {
+        beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete virtual machine. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginDeleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginDeleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginDeleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginDeleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Modify properties of virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the LabVirtualMachineInner object if successful.
+     */
+    public LabVirtualMachineInner patchResource(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine).toBlocking().single().body();
+    }
+
+    /**
+     * Modify properties of virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<LabVirtualMachineInner> patchResourceAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine, final ServiceCallback<LabVirtualMachineInner> serviceCallback) {
+        return ServiceFuture.fromResponse(patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine), serviceCallback);
+    }
+
+    /**
+     * Modify properties of virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabVirtualMachineInner object
+     */
+    public Observable<LabVirtualMachineInner> patchResourceAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, labVirtualMachine).map(new Func1<ServiceResponse<LabVirtualMachineInner>, LabVirtualMachineInner>() {
+            @Override
+            public LabVirtualMachineInner call(ServiceResponse<LabVirtualMachineInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Modify properties of virtual machines.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param labVirtualMachine the LabVirtualMachineInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the LabVirtualMachineInner object
+     */
+    public Observable<ServiceResponse<LabVirtualMachineInner>> patchResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, LabVirtualMachineInner labVirtualMachine) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (labVirtualMachine == null) {
+            throw new IllegalArgumentException("Parameter labVirtualMachine is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(labVirtualMachine);
+        return service.patchResource(this.client.subscriptionId(), resourceGroupName, labName, name, labVirtualMachine, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<LabVirtualMachineInner>>>() {
+                @Override
+                public Observable<ServiceResponse<LabVirtualMachineInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<LabVirtualMachineInner> clientResponse = patchResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<LabVirtualMachineInner> patchResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<LabVirtualMachineInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<LabVirtualMachineInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void applyArtifacts(String resourceGroupName, String labName, String name) {
+        applyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> applyArtifactsAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(applyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> applyArtifactsAsync(String resourceGroupName, String labName, String name) {
+        return applyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> applyArtifactsWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String artifactsConverted = null;
+        ApplyArtifactsRequest applyArtifactsRequest = new ApplyArtifactsRequest();
+        applyArtifactsRequest.withArtifacts(null);
+        Observable<Response<ResponseBody>> observable = service.applyArtifacts(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), applyArtifactsRequest, this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void applyArtifacts(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts) {
+        applyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name, artifacts).toBlocking().last().body();
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> applyArtifactsAsync(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(applyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name, artifacts), serviceCallback);
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> applyArtifactsAsync(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts) {
+        return applyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name, artifacts).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> applyArtifactsWithServiceResponseAsync(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(artifacts);
+        ApplyArtifactsRequest applyArtifactsRequest = new ApplyArtifactsRequest();
+        applyArtifactsRequest.withArtifacts(artifacts);
+        Observable<Response<ResponseBody>> observable = service.applyArtifacts(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), applyArtifactsRequest, this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginApplyArtifacts(String resourceGroupName, String labName, String name) {
+        beginApplyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginApplyArtifactsAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginApplyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginApplyArtifactsAsync(String resourceGroupName, String labName, String name) {
+        return beginApplyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginApplyArtifactsWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final List<ArtifactInstallProperties> artifacts = null;
+        ApplyArtifactsRequest applyArtifactsRequest = new ApplyArtifactsRequest();
+        applyArtifactsRequest.withArtifacts(null);
+        return service.beginApplyArtifacts(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), applyArtifactsRequest, this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginApplyArtifactsDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginApplyArtifacts(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts) {
+        beginApplyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name, artifacts).toBlocking().single().body();
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginApplyArtifactsAsync(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginApplyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name, artifacts), serviceCallback);
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginApplyArtifactsAsync(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts) {
+        return beginApplyArtifactsWithServiceResponseAsync(resourceGroupName, labName, name, artifacts).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Apply artifacts to Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param artifacts The list of artifacts to apply.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginApplyArtifactsWithServiceResponseAsync(String resourceGroupName, String labName, String name, List<ArtifactInstallProperties> artifacts) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(artifacts);
+        ApplyArtifactsRequest applyArtifactsRequest = new ApplyArtifactsRequest();
+        applyArtifactsRequest.withArtifacts(artifacts);
+        return service.beginApplyArtifacts(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), applyArtifactsRequest, this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginApplyArtifactsDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginApplyArtifactsDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void start(String resourceGroupName, String labName, String name) {
+        startWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> startAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(startWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> startAsync(String resourceGroupName, String labName, String name) {
+        return startWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> startWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.start(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginStart(String resourceGroupName, String labName, String name) {
+        beginStartWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginStartAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginStartWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginStartAsync(String resourceGroupName, String labName, String name) {
+        return beginStartWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Start a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginStartWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginStart(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginStartDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginStartDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void stop(String resourceGroupName, String labName, String name) {
+        stopWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> stopAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(stopWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> stopAsync(String resourceGroupName, String labName, String name) {
+        return stopWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> stopWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.stop(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginStop(String resourceGroupName, String labName, String name) {
+        beginStopWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginStopAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginStopWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginStopAsync(String resourceGroupName, String labName, String name) {
+        return beginStopWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Stop a Lab VM. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual Machine.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginStopWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginStop(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginStopDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginStopDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<Void>() { }.getType())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;LabVirtualMachineInner&gt; object if successful.
+     */
+    public PagedList<LabVirtualMachineInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<LabVirtualMachineInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<LabVirtualMachineInner>(response.body()) {
+            @Override
+            public Page<LabVirtualMachineInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<LabVirtualMachineInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<LabVirtualMachineInner>> serviceFuture, final ListOperationCallback<LabVirtualMachineInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVirtualMachineInner&gt; object
+     */
+    public Observable<Page<LabVirtualMachineInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<LabVirtualMachineInner>>, Page<LabVirtualMachineInner>>() {
+                @Override
+                public Page<LabVirtualMachineInner> call(ServiceResponse<Page<LabVirtualMachineInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;LabVirtualMachineInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<LabVirtualMachineInner>>, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(ServiceResponse<Page<LabVirtualMachineInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List virtual machines.
+     *
+    ServiceResponse<PageImpl<LabVirtualMachineInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;LabVirtualMachineInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<LabVirtualMachineInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<LabVirtualMachineInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<LabVirtualMachineInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<LabVirtualMachineInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<LabVirtualMachineInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<LabVirtualMachineInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<LabVirtualMachineInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworkImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworkImpl.java
new file mode 100644
index 000000000000..ad8f262cc784
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworkImpl.java
@@ -0,0 +1,175 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetwork;
+import com.microsoft.azure.arm.model.implementation.CreatableUpdatableImpl;
+import rx.Observable;
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Subnet;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.SubnetOverride;
+import java.util.Map;
+
+class VirtualNetworkImpl extends CreatableUpdatableImpl<VirtualNetwork, VirtualNetworkInner, VirtualNetworkImpl> implements VirtualNetwork, VirtualNetwork.Definition, VirtualNetwork.Update {
+    private final DevTestLabsManager manager;
+    private String resourceGroupName;
+    private String labName;
+    private String name;
+
+    VirtualNetworkImpl(String name, DevTestLabsManager manager) {
+        super(name, new VirtualNetworkInner());
+        this.manager = manager;
+        // Set resource name
+        this.name = name;
+        //
+    }
+
+    VirtualNetworkImpl(VirtualNetworkInner inner, DevTestLabsManager manager) {
+        super(inner.name(), inner);
+        this.manager = manager;
+        // Set resource name
+        this.name = inner.name();
+        // set resource ancestor and positional variables
+        this.resourceGroupName = IdParsingUtils.getValueFromIdByName(inner.id(), "resourceGroups");
+        this.labName = IdParsingUtils.getValueFromIdByName(inner.id(), "labs");
+        this.name = IdParsingUtils.getValueFromIdByName(inner.id(), "virtualnetworks");
+        //
+    }
+
+    @Override
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public Observable<VirtualNetwork> createResourceAsync() {
+        VirtualNetworksInner client = this.manager().inner().virtualNetworks();
+        return client.createOrUpdateResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    public Observable<VirtualNetwork> updateResourceAsync() {
+        VirtualNetworksInner client = this.manager().inner().virtualNetworks();
+        return client.patchResourceAsync(this.resourceGroupName, this.labName, this.name, this.inner())
+            .map(innerToFluentMap(this));
+    }
+
+    @Override
+    protected Observable<VirtualNetworkInner> getInnerAsync() {
+        VirtualNetworksInner client = this.manager().inner().virtualNetworks();
+        return client.getResourceAsync(this.resourceGroupName, this.labName, this.name);
+    }
+
+    @Override
+    public boolean isInCreateMode() {
+        return this.inner().id() == null;
+    }
+
+
+    @Override
+    public List<Subnet> allowedSubnets() {
+        return this.inner().allowedSubnets();
+    }
+
+    @Override
+    public String description() {
+        return this.inner().description();
+    }
+
+    @Override
+    public String externalProviderResourceId() {
+        return this.inner().externalProviderResourceId();
+    }
+
+    @Override
+    public String id() {
+        return this.inner().id();
+    }
+
+    @Override
+    public String location() {
+        return this.inner().location();
+    }
+
+    @Override
+    public String name() {
+        return this.inner().name();
+    }
+
+    @Override
+    public String provisioningState() {
+        return this.inner().provisioningState();
+    }
+
+    @Override
+    public List<SubnetOverride> subnetOverrides() {
+        return this.inner().subnetOverrides();
+    }
+
+    @Override
+    public Map<String, String> tags() {
+        return this.inner().getTags();
+    }
+
+    @Override
+    public String type() {
+        return this.inner().type();
+    }
+
+    @Override
+    public VirtualNetworkImpl withExistingLab(String resourceGroupName, String labName) {
+        this.resourceGroupName = resourceGroupName;
+        this.labName = labName;
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withLocation(String location) {
+        this.inner().withLocation(location);
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withAllowedSubnets(List<Subnet> allowedSubnets) {
+        this.inner().withAllowedSubnets(allowedSubnets);
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withDescription(String description) {
+        this.inner().withDescription(description);
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withExternalProviderResourceId(String externalProviderResourceId) {
+        this.inner().withExternalProviderResourceId(externalProviderResourceId);
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withProvisioningState(String provisioningState) {
+        this.inner().withProvisioningState(provisioningState);
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withSubnetOverrides(List<SubnetOverride> subnetOverrides) {
+        this.inner().withSubnetOverrides(subnetOverrides);
+        return this;
+    }
+
+    @Override
+    public VirtualNetworkImpl withTags(Map<String, String> tags) {
+        this.inner().withTags(tags);
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworkInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworkInner.java
new file mode 100644
index 000000000000..3193e44f35f1
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworkInner.java
@@ -0,0 +1,153 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import java.util.List;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.Subnet;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.SubnetOverride;
+import com.fasterxml.jackson.annotation.JsonProperty;
+import com.microsoft.rest.serializer.JsonFlatten;
+import com.microsoft.azure.Resource;
+
+/**
+ * A virtual network.
+ */
+@JsonFlatten
+public class VirtualNetworkInner extends Resource {
+    /**
+     * The allowed subnets of the virtual network.
+     */
+    @JsonProperty(value = "properties.allowedSubnets")
+    private List<Subnet> allowedSubnets;
+
+    /**
+     * The description of the virtual network.
+     */
+    @JsonProperty(value = "properties.description")
+    private String description;
+
+    /**
+     * The Microsoft.Network resource identifier of the virtual network.
+     */
+    @JsonProperty(value = "properties.externalProviderResourceId")
+    private String externalProviderResourceId;
+
+    /**
+     * The subnet overrides of the virtual network.
+     */
+    @JsonProperty(value = "properties.subnetOverrides")
+    private List<SubnetOverride> subnetOverrides;
+
+    /**
+     * The provisioning status of the resource.
+     */
+    @JsonProperty(value = "properties.provisioningState")
+    private String provisioningState;
+
+    /**
+     * Get the allowed subnets of the virtual network.
+     *
+     * @return the allowedSubnets value
+     */
+    public List<Subnet> allowedSubnets() {
+        return this.allowedSubnets;
+    }
+
+    /**
+     * Set the allowed subnets of the virtual network.
+     *
+     * @param allowedSubnets the allowedSubnets value to set
+     * @return the VirtualNetworkInner object itself.
+     */
+    public VirtualNetworkInner withAllowedSubnets(List<Subnet> allowedSubnets) {
+        this.allowedSubnets = allowedSubnets;
+        return this;
+    }
+
+    /**
+     * Get the description of the virtual network.
+     *
+     * @return the description value
+     */
+    public String description() {
+        return this.description;
+    }
+
+    /**
+     * Set the description of the virtual network.
+     *
+     * @param description the description value to set
+     * @return the VirtualNetworkInner object itself.
+     */
+    public VirtualNetworkInner withDescription(String description) {
+        this.description = description;
+        return this;
+    }
+
+    /**
+     * Get the Microsoft.Network resource identifier of the virtual network.
+     *
+     * @return the externalProviderResourceId value
+     */
+    public String externalProviderResourceId() {
+        return this.externalProviderResourceId;
+    }
+
+    /**
+     * Set the Microsoft.Network resource identifier of the virtual network.
+     *
+     * @param externalProviderResourceId the externalProviderResourceId value to set
+     * @return the VirtualNetworkInner object itself.
+     */
+    public VirtualNetworkInner withExternalProviderResourceId(String externalProviderResourceId) {
+        this.externalProviderResourceId = externalProviderResourceId;
+        return this;
+    }
+
+    /**
+     * Get the subnet overrides of the virtual network.
+     *
+     * @return the subnetOverrides value
+     */
+    public List<SubnetOverride> subnetOverrides() {
+        return this.subnetOverrides;
+    }
+
+    /**
+     * Set the subnet overrides of the virtual network.
+     *
+     * @param subnetOverrides the subnetOverrides value to set
+     * @return the VirtualNetworkInner object itself.
+     */
+    public VirtualNetworkInner withSubnetOverrides(List<SubnetOverride> subnetOverrides) {
+        this.subnetOverrides = subnetOverrides;
+        return this;
+    }
+
+    /**
+     * Get the provisioning status of the resource.
+     *
+     * @return the provisioningState value
+     */
+    public String provisioningState() {
+        return this.provisioningState;
+    }
+
+    /**
+     * Set the provisioning status of the resource.
+     *
+     * @param provisioningState the provisioningState value to set
+     * @return the VirtualNetworkInner object itself.
+     */
+    public VirtualNetworkInner withProvisioningState(String provisioningState) {
+        this.provisioningState = provisioningState;
+        return this;
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworksImpl.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworksImpl.java
new file mode 100644
index 000000000000..3a5ef168943a
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworksImpl.java
@@ -0,0 +1,85 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ *
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import com.microsoft.azure.arm.model.implementation.WrapperImpl;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks;
+import rx.Completable;
+import rx.Observable;
+import rx.functions.Func1;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetwork;
+
+class VirtualNetworksImpl extends WrapperImpl<VirtualNetworksInner> implements VirtualNetworks {
+    private final DevTestLabsManager manager;
+
+    VirtualNetworksImpl(DevTestLabsManager manager) {
+        super(manager.inner().virtualNetworks());
+        this.manager = manager;
+    }
+
+    public DevTestLabsManager manager() {
+        return this.manager;
+    }
+
+    @Override
+    public VirtualNetworkImpl define(String name) {
+        return wrapModel(name);
+    }
+
+    private VirtualNetworkImpl wrapModel(VirtualNetworkInner inner) {
+        return  new VirtualNetworkImpl(inner, manager());
+    }
+
+    private VirtualNetworkImpl wrapModel(String name) {
+        return new VirtualNetworkImpl(name, this.manager());
+    }
+
+    @Override
+    public Observable<VirtualNetwork> listAsync(final String resourceGroupName, final String labName) {
+        VirtualNetworksInner client = this.inner();
+        return client.listAsync(resourceGroupName, labName)
+        .flatMapIterable(new Func1<Page<VirtualNetworkInner>, Iterable<VirtualNetworkInner>>() {
+            @Override
+            public Iterable<VirtualNetworkInner> call(Page<VirtualNetworkInner> page) {
+                return page.items();
+            }
+        })
+        .map(new Func1<VirtualNetworkInner, VirtualNetwork>() {
+            @Override
+            public VirtualNetwork call(VirtualNetworkInner inner) {
+                return wrapModel(inner);
+            }
+        });
+    }
+
+    @Override
+    public Observable<VirtualNetwork> getResourceAsync(String resourceGroupName, String labName, String name) {
+        VirtualNetworksInner client = this.inner();
+        return client.getResourceAsync(resourceGroupName, labName, name)
+        .flatMap(new Func1<VirtualNetworkInner, Observable<VirtualNetwork>>() {
+            @Override
+            public Observable<VirtualNetwork> call(VirtualNetworkInner inner) {
+                if (inner == null) {
+                    return Observable.empty();
+                } else {
+                    return Observable.just((VirtualNetwork)wrapModel(inner));
+                }
+            }
+       });
+    }
+
+    @Override
+    public Completable deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        VirtualNetworksInner client = this.inner();
+        return client.deleteResourceAsync(resourceGroupName, labName, name).toCompletable();
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworksInner.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworksInner.java
new file mode 100644
index 000000000000..f1992098fdbf
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/VirtualNetworksInner.java
@@ -0,0 +1,1015 @@
+/**
+ * Copyright (c) Microsoft Corporation. All rights reserved.
+ * Licensed under the MIT License. See License.txt in the project root for
+ * license information.
+ *
+ * Code generated by Microsoft (R) AutoRest Code Generator.
+ */
+
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
+
+import retrofit2.Retrofit;
+import com.google.common.reflect.TypeToken;
+import com.microsoft.azure.AzureServiceFuture;
+import com.microsoft.azure.CloudException;
+import com.microsoft.azure.ListOperationCallback;
+import com.microsoft.azure.Page;
+import com.microsoft.azure.PagedList;
+import com.microsoft.rest.ServiceCallback;
+import com.microsoft.rest.ServiceFuture;
+import com.microsoft.rest.ServiceResponse;
+import com.microsoft.rest.Validator;
+import java.io.IOException;
+import java.util.List;
+import okhttp3.ResponseBody;
+import retrofit2.http.Body;
+import retrofit2.http.GET;
+import retrofit2.http.Header;
+import retrofit2.http.Headers;
+import retrofit2.http.HTTP;
+import retrofit2.http.PATCH;
+import retrofit2.http.Path;
+import retrofit2.http.PUT;
+import retrofit2.http.Query;
+import retrofit2.http.Url;
+import retrofit2.Response;
+import rx.functions.Func1;
+import rx.Observable;
+
+/**
+ * An instance of this class provides access to all the operations defined
+ * in VirtualNetworks.
+ */
+public class VirtualNetworksInner {
+    /** The Retrofit service to perform REST calls. */
+    private VirtualNetworksService service;
+    /** The service client containing this operation class. */
+    private DevTestLabsClientImpl client;
+
+    /**
+     * Initializes an instance of VirtualNetworksInner.
+     *
+     * @param retrofit the Retrofit instance built from a Retrofit Builder.
+     * @param client the instance of the service client containing this operation class.
+     */
+    public VirtualNetworksInner(Retrofit retrofit, DevTestLabsClientImpl client) {
+        this.service = retrofit.create(VirtualNetworksService.class);
+        this.client = client;
+    }
+
+    /**
+     * The interface defining all the services for VirtualNetworks to be
+     * used by Retrofit to perform actually REST calls.
+     */
+    interface VirtualNetworksService {
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks list" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks")
+        Observable<Response<ResponseBody>> list(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Query("$filter") String filter, @Query("$top") Integer top, @Query("$orderBy") String orderBy, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks getResource" })
+        @GET("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks/{name}")
+        Observable<Response<ResponseBody>> getResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks createOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks/{name}")
+        Observable<Response<ResponseBody>> createOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body VirtualNetworkInner virtualNetwork, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks beginCreateOrUpdateResource" })
+        @PUT("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks/{name}")
+        Observable<Response<ResponseBody>> beginCreateOrUpdateResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body VirtualNetworkInner virtualNetwork, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks deleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> deleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks beginDeleteResource" })
+        @HTTP(path = "subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks/{name}", method = "DELETE", hasBody = true)
+        Observable<Response<ResponseBody>> beginDeleteResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks patchResource" })
+        @PATCH("subscriptions/{subscriptionId}/resourceGroups/{resourceGroupName}/providers/Microsoft.DevTestLab/labs/{labName}/virtualnetworks/{name}")
+        Observable<Response<ResponseBody>> patchResource(@Path("subscriptionId") String subscriptionId, @Path("resourceGroupName") String resourceGroupName, @Path("labName") String labName, @Path("name") String name, @Body VirtualNetworkInner virtualNetwork, @Query("api-version") String apiVersion, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+        @Headers({ "Content-Type: application/json; charset=utf-8", "x-ms-logging-context: com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.VirtualNetworks listNext" })
+        @GET
+        Observable<Response<ResponseBody>> listNext(@Url String nextUrl, @Header("accept-language") String acceptLanguage, @Header("User-Agent") String userAgent);
+
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;VirtualNetworkInner&gt; object if successful.
+     */
+    public PagedList<VirtualNetworkInner> list(final String resourceGroupName, final String labName) {
+        ServiceResponse<Page<VirtualNetworkInner>> response = listSinglePageAsync(resourceGroupName, labName).toBlocking().single();
+        return new PagedList<VirtualNetworkInner>(response.body()) {
+            @Override
+            public Page<VirtualNetworkInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<VirtualNetworkInner>> listAsync(final String resourceGroupName, final String labName, final ListOperationCallback<VirtualNetworkInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName),
+            new Func1<String, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;VirtualNetworkInner&gt; object
+     */
+    public Observable<Page<VirtualNetworkInner>> listAsync(final String resourceGroupName, final String labName) {
+        return listWithServiceResponseAsync(resourceGroupName, labName)
+            .map(new Func1<ServiceResponse<Page<VirtualNetworkInner>>, Page<VirtualNetworkInner>>() {
+                @Override
+                public Page<VirtualNetworkInner> call(ServiceResponse<Page<VirtualNetworkInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;VirtualNetworkInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<VirtualNetworkInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName) {
+        return listSinglePageAsync(resourceGroupName, labName)
+            .concatMap(new Func1<ServiceResponse<Page<VirtualNetworkInner>>, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(ServiceResponse<Page<VirtualNetworkInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;VirtualNetworkInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<VirtualNetworkInner>>> listSinglePageAsync(final String resourceGroupName, final String labName) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        final String filter = null;
+        final Integer top = null;
+        final String orderBy = null;
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<VirtualNetworkInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<VirtualNetworkInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;VirtualNetworkInner&gt; object if successful.
+     */
+    public PagedList<VirtualNetworkInner> list(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        ServiceResponse<Page<VirtualNetworkInner>> response = listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy).toBlocking().single();
+        return new PagedList<VirtualNetworkInner>(response.body()) {
+            @Override
+            public Page<VirtualNetworkInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<VirtualNetworkInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy, final ListOperationCallback<VirtualNetworkInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy),
+            new Func1<String, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;VirtualNetworkInner&gt; object
+     */
+    public Observable<Page<VirtualNetworkInner>> listAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listWithServiceResponseAsync(resourceGroupName, labName, filter, top, orderBy)
+            .map(new Func1<ServiceResponse<Page<VirtualNetworkInner>>, Page<VirtualNetworkInner>>() {
+                @Override
+                public Page<VirtualNetworkInner> call(ServiceResponse<Page<VirtualNetworkInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param filter The filter to apply on the operation.
+     * @param top the Integer value
+     * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;VirtualNetworkInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<VirtualNetworkInner>>> listWithServiceResponseAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        return listSinglePageAsync(resourceGroupName, labName, filter, top, orderBy)
+            .concatMap(new Func1<ServiceResponse<Page<VirtualNetworkInner>>, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(ServiceResponse<Page<VirtualNetworkInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+    ServiceResponse<PageImpl<VirtualNetworkInner>> * @param resourceGroupName The name of the resource group.
+    ServiceResponse<PageImpl<VirtualNetworkInner>> * @param labName The name of the lab.
+    ServiceResponse<PageImpl<VirtualNetworkInner>> * @param filter The filter to apply on the operation.
+    ServiceResponse<PageImpl<VirtualNetworkInner>> * @param top the Integer value
+    ServiceResponse<PageImpl<VirtualNetworkInner>> * @param orderBy the String value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;VirtualNetworkInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<VirtualNetworkInner>>> listSinglePageAsync(final String resourceGroupName, final String labName, final String filter, final Integer top, final String orderBy) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.list(this.client.subscriptionId(), resourceGroupName, labName, filter, top, orderBy, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<VirtualNetworkInner>> result = listDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<VirtualNetworkInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<VirtualNetworkInner>> listDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<VirtualNetworkInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<VirtualNetworkInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Get virtual network.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the VirtualNetworkInner object if successful.
+     */
+    public VirtualNetworkInner getResource(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Get virtual network.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<VirtualNetworkInner> getResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<VirtualNetworkInner> serviceCallback) {
+        return ServiceFuture.fromResponse(getResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Get virtual network.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the VirtualNetworkInner object
+     */
+    public Observable<VirtualNetworkInner> getResourceAsync(String resourceGroupName, String labName, String name) {
+        return getResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<VirtualNetworkInner>, VirtualNetworkInner>() {
+            @Override
+            public VirtualNetworkInner call(ServiceResponse<VirtualNetworkInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Get virtual network.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the VirtualNetworkInner object
+     */
+    public Observable<ServiceResponse<VirtualNetworkInner>> getResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.getResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<VirtualNetworkInner>>>() {
+                @Override
+                public Observable<ServiceResponse<VirtualNetworkInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<VirtualNetworkInner> clientResponse = getResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<VirtualNetworkInner> getResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<VirtualNetworkInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<VirtualNetworkInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the VirtualNetworkInner object if successful.
+     */
+    public VirtualNetworkInner createOrUpdateResource(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork).toBlocking().last().body();
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<VirtualNetworkInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork, final ServiceCallback<VirtualNetworkInner> serviceCallback) {
+        return ServiceFuture.fromResponse(createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<VirtualNetworkInner> createOrUpdateResourceAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        return createOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork).map(new Func1<ServiceResponse<VirtualNetworkInner>, VirtualNetworkInner>() {
+            @Override
+            public VirtualNetworkInner call(ServiceResponse<VirtualNetworkInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<VirtualNetworkInner>> createOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (virtualNetwork == null) {
+            throw new IllegalArgumentException("Parameter virtualNetwork is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(virtualNetwork);
+        Observable<Response<ResponseBody>> observable = service.createOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, virtualNetwork, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPutOrPatchResultAsync(observable, new TypeToken<VirtualNetworkInner>() { }.getType());
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the VirtualNetworkInner object if successful.
+     */
+    public VirtualNetworkInner beginCreateOrUpdateResource(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork).toBlocking().single().body();
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<VirtualNetworkInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork, final ServiceCallback<VirtualNetworkInner> serviceCallback) {
+        return ServiceFuture.fromResponse(beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork), serviceCallback);
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the VirtualNetworkInner object
+     */
+    public Observable<VirtualNetworkInner> beginCreateOrUpdateResourceAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        return beginCreateOrUpdateResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork).map(new Func1<ServiceResponse<VirtualNetworkInner>, VirtualNetworkInner>() {
+            @Override
+            public VirtualNetworkInner call(ServiceResponse<VirtualNetworkInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Create or replace an existing virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the VirtualNetworkInner object
+     */
+    public Observable<ServiceResponse<VirtualNetworkInner>> beginCreateOrUpdateResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (virtualNetwork == null) {
+            throw new IllegalArgumentException("Parameter virtualNetwork is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(virtualNetwork);
+        return service.beginCreateOrUpdateResource(this.client.subscriptionId(), resourceGroupName, labName, name, virtualNetwork, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<VirtualNetworkInner>>>() {
+                @Override
+                public Observable<ServiceResponse<VirtualNetworkInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<VirtualNetworkInner> clientResponse = beginCreateOrUpdateResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<VirtualNetworkInner> beginCreateOrUpdateResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<VirtualNetworkInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<VirtualNetworkInner>() { }.getType())
+                .register(201, new TypeToken<VirtualNetworkInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void deleteResource(String resourceGroupName, String labName, String name) {
+        deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().last().body();
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> deleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<Void> deleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return deleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable for the request
+     */
+    public Observable<ServiceResponse<Void>> deleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Observable<Response<ResponseBody>> observable = service.deleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent());
+        return client.getAzureClient().getPostOrDeleteResultAsync(observable, new TypeToken<Void>() { }.getType());
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     */
+    public void beginDeleteResource(String resourceGroupName, String labName, String name) {
+        beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).toBlocking().single().body();
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name, final ServiceCallback<Void> serviceCallback) {
+        return ServiceFuture.fromResponse(beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name), serviceCallback);
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<Void> beginDeleteResourceAsync(String resourceGroupName, String labName, String name) {
+        return beginDeleteResourceWithServiceResponseAsync(resourceGroupName, labName, name).map(new Func1<ServiceResponse<Void>, Void>() {
+            @Override
+            public Void call(ServiceResponse<Void> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Delete virtual network. This operation can take a while to complete.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceResponse} object if successful.
+     */
+    public Observable<ServiceResponse<Void>> beginDeleteResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        return service.beginDeleteResource(this.client.subscriptionId(), resourceGroupName, labName, name, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Void>>>() {
+                @Override
+                public Observable<ServiceResponse<Void>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<Void> clientResponse = beginDeleteResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<Void> beginDeleteResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<Void, CloudException>newInstance(this.client.serializerAdapter())
+                .register(202, new TypeToken<Void>() { }.getType())
+                .register(204, new TypeToken<Void>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * Modify properties of virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the VirtualNetworkInner object if successful.
+     */
+    public VirtualNetworkInner patchResource(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork).toBlocking().single().body();
+    }
+
+    /**
+     * Modify properties of virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<VirtualNetworkInner> patchResourceAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork, final ServiceCallback<VirtualNetworkInner> serviceCallback) {
+        return ServiceFuture.fromResponse(patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork), serviceCallback);
+    }
+
+    /**
+     * Modify properties of virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the VirtualNetworkInner object
+     */
+    public Observable<VirtualNetworkInner> patchResourceAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        return patchResourceWithServiceResponseAsync(resourceGroupName, labName, name, virtualNetwork).map(new Func1<ServiceResponse<VirtualNetworkInner>, VirtualNetworkInner>() {
+            @Override
+            public VirtualNetworkInner call(ServiceResponse<VirtualNetworkInner> response) {
+                return response.body();
+            }
+        });
+    }
+
+    /**
+     * Modify properties of virtual networks.
+     *
+     * @param resourceGroupName The name of the resource group.
+     * @param labName The name of the lab.
+     * @param name The name of the virtual network.
+     * @param virtualNetwork the VirtualNetworkInner value
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the VirtualNetworkInner object
+     */
+    public Observable<ServiceResponse<VirtualNetworkInner>> patchResourceWithServiceResponseAsync(String resourceGroupName, String labName, String name, VirtualNetworkInner virtualNetwork) {
+        if (this.client.subscriptionId() == null) {
+            throw new IllegalArgumentException("Parameter this.client.subscriptionId() is required and cannot be null.");
+        }
+        if (resourceGroupName == null) {
+            throw new IllegalArgumentException("Parameter resourceGroupName is required and cannot be null.");
+        }
+        if (labName == null) {
+            throw new IllegalArgumentException("Parameter labName is required and cannot be null.");
+        }
+        if (name == null) {
+            throw new IllegalArgumentException("Parameter name is required and cannot be null.");
+        }
+        if (virtualNetwork == null) {
+            throw new IllegalArgumentException("Parameter virtualNetwork is required and cannot be null.");
+        }
+        if (this.client.apiVersion() == null) {
+            throw new IllegalArgumentException("Parameter this.client.apiVersion() is required and cannot be null.");
+        }
+        Validator.validate(virtualNetwork);
+        return service.patchResource(this.client.subscriptionId(), resourceGroupName, labName, name, virtualNetwork, this.client.apiVersion(), this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<VirtualNetworkInner>>>() {
+                @Override
+                public Observable<ServiceResponse<VirtualNetworkInner>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<VirtualNetworkInner> clientResponse = patchResourceDelegate(response);
+                        return Observable.just(clientResponse);
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<VirtualNetworkInner> patchResourceDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<VirtualNetworkInner, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<VirtualNetworkInner>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @throws CloudException thrown if the request is rejected by server
+     * @throws RuntimeException all other wrapped checked exceptions if the request fails to be sent
+     * @return the PagedList&lt;VirtualNetworkInner&gt; object if successful.
+     */
+    public PagedList<VirtualNetworkInner> listNext(final String nextPageLink) {
+        ServiceResponse<Page<VirtualNetworkInner>> response = listNextSinglePageAsync(nextPageLink).toBlocking().single();
+        return new PagedList<VirtualNetworkInner>(response.body()) {
+            @Override
+            public Page<VirtualNetworkInner> nextPage(String nextPageLink) {
+                return listNextSinglePageAsync(nextPageLink).toBlocking().single().body();
+            }
+        };
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @param serviceFuture the ServiceFuture object tracking the Retrofit calls
+     * @param serviceCallback the async ServiceCallback to handle successful and failed responses.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the {@link ServiceFuture} object
+     */
+    public ServiceFuture<List<VirtualNetworkInner>> listNextAsync(final String nextPageLink, final ServiceFuture<List<VirtualNetworkInner>> serviceFuture, final ListOperationCallback<VirtualNetworkInner> serviceCallback) {
+        return AzureServiceFuture.fromPageResponse(
+            listNextSinglePageAsync(nextPageLink),
+            new Func1<String, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(String nextPageLink) {
+                    return listNextSinglePageAsync(nextPageLink);
+                }
+            },
+            serviceCallback);
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;VirtualNetworkInner&gt; object
+     */
+    public Observable<Page<VirtualNetworkInner>> listNextAsync(final String nextPageLink) {
+        return listNextWithServiceResponseAsync(nextPageLink)
+            .map(new Func1<ServiceResponse<Page<VirtualNetworkInner>>, Page<VirtualNetworkInner>>() {
+                @Override
+                public Page<VirtualNetworkInner> call(ServiceResponse<Page<VirtualNetworkInner>> response) {
+                    return response.body();
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+     * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the observable to the PagedList&lt;VirtualNetworkInner&gt; object
+     */
+    public Observable<ServiceResponse<Page<VirtualNetworkInner>>> listNextWithServiceResponseAsync(final String nextPageLink) {
+        return listNextSinglePageAsync(nextPageLink)
+            .concatMap(new Func1<ServiceResponse<Page<VirtualNetworkInner>>, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(ServiceResponse<Page<VirtualNetworkInner>> page) {
+                    String nextPageLink = page.body().nextPageLink();
+                    if (nextPageLink == null) {
+                        return Observable.just(page);
+                    }
+                    return Observable.just(page).concatWith(listNextWithServiceResponseAsync(nextPageLink));
+                }
+            });
+    }
+
+    /**
+     * List virtual networks.
+     *
+    ServiceResponse<PageImpl<VirtualNetworkInner>> * @param nextPageLink The NextLink from the previous successful call to List operation.
+     * @throws IllegalArgumentException thrown if parameters fail the validation
+     * @return the PagedList&lt;VirtualNetworkInner&gt; object wrapped in {@link ServiceResponse} if successful.
+     */
+    public Observable<ServiceResponse<Page<VirtualNetworkInner>>> listNextSinglePageAsync(final String nextPageLink) {
+        if (nextPageLink == null) {
+            throw new IllegalArgumentException("Parameter nextPageLink is required and cannot be null.");
+        }
+        String nextUrl = String.format("%s", nextPageLink);
+        return service.listNext(nextUrl, this.client.acceptLanguage(), this.client.userAgent())
+            .flatMap(new Func1<Response<ResponseBody>, Observable<ServiceResponse<Page<VirtualNetworkInner>>>>() {
+                @Override
+                public Observable<ServiceResponse<Page<VirtualNetworkInner>>> call(Response<ResponseBody> response) {
+                    try {
+                        ServiceResponse<PageImpl<VirtualNetworkInner>> result = listNextDelegate(response);
+                        return Observable.just(new ServiceResponse<Page<VirtualNetworkInner>>(result.body(), result.response()));
+                    } catch (Throwable t) {
+                        return Observable.error(t);
+                    }
+                }
+            });
+    }
+
+    private ServiceResponse<PageImpl<VirtualNetworkInner>> listNextDelegate(Response<ResponseBody> response) throws CloudException, IOException, IllegalArgumentException {
+        return this.client.restClient().responseBuilderFactory().<PageImpl<VirtualNetworkInner>, CloudException>newInstance(this.client.serializerAdapter())
+                .register(200, new TypeToken<PageImpl<VirtualNetworkInner>>() { }.getType())
+                .registerError(CloudException.class)
+                .build(response);
+    }
+
+}
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/package-info.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/package-info.java
new file mode 100644
index 000000000000..2d7e0059c27a
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/implementation/package-info.java
@@ -0,0 +1,11 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+//
+// Code generated by Microsoft (R) AutoRest Code Generator.
+
+/**
+ * This package contains the implementation classes for DevTestLabsClient.
+ * Azure DevTest Labs REST API version 2015-05-21-preview.
+ */
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview.implementation;
diff --git a/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/package-info.java b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/package-info.java
new file mode 100644
index 000000000000..4e6c7f531a2c
--- /dev/null
+++ b/sdk/devtestlabs/mgmt-v2015_05_21_preview/src/main/java/com/microsoft/azure/management/devtestlabs/v2015_05_21_preview/package-info.java
@@ -0,0 +1,11 @@
+// Copyright (c) Microsoft Corporation. All rights reserved.
+// Licensed under the MIT License. See License.txt in the project root for
+// license information.
+//
+// Code generated by Microsoft (R) AutoRest Code Generator.
+
+/**
+ * This package contains the classes for DevTestLabsClient.
+ * Azure DevTest Labs REST API version 2015-05-21-preview.
+ */
+package com.microsoft.azure.management.devtestlabs.v2015_05_21_preview;