Adds additional javadocs and removes broken link. (Azure#37060)

* Remove broken link.

* Update javadocs for ctor.

* Add ctor javadocs

* Add @deprecated javadoc

Author: conniey

sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/Messages.java

@@ -91,6 +91,8 @@ public enum Messages {
     static final String ENCODING_TYPE_NOT_SUPPORTED_ENCODER = getMessage("ENCODING_TYPE_NOT_SUPPORTED_ENCODER");
 
     /**
+     * Gets the message given its corresponding key.
+     *
      * @param key the key of the message to retrieve
      * @return the message matching the given key
      */

sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/models/Checkpoint.java

@@ -24,6 +24,12 @@ public class Checkpoint {
     private Long offset;
     private Long sequenceNumber;
 
+    /**
+     * Creates a new instance.
+     */
+    public Checkpoint() {
+    }
+
     /**
      * Returns the fully qualified namespace of the Event Hub.
      *

sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/models/CreateBatchOptions.java

@@ -20,6 +20,12 @@ public class CreateBatchOptions {
     private String partitionKey;
     private String partitionId;
 
+    /**
+     * Creates a new instance.
+     */
+    public CreateBatchOptions() {
+    }
+
     /**
      * Sets the maximum size for the {@link EventDataBatch batch of events}, in bytes.
      *

sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/models/PartitionOwnership.java

@@ -20,6 +20,12 @@ public class PartitionOwnership {
     private Long lastModifiedTime;
     private String eTag;
 
+    /**
+     * Creates a new instance.
+     */
+    public PartitionOwnership() {
+    }
+
     /**
      * Returns the fully qualified namespace of the Event Hub.
      *

sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/models/ReceiveOptions.java

@@ -18,6 +18,12 @@ public class ReceiveOptions {
     private Long ownerLevel;
     private boolean trackLastEnqueuedEventProperties;
 
+    /**
+     * Creates a new instance.
+     */
+    public ReceiveOptions() {
+    }
+
     /**
      * Gets the owner level for this consumer. If the value is {@code null}, then this is not an exclusive consumer.
      * Otherwise, it is an exclusive consumer, and there can only be one active consumer for each partition and consumer

sdk/eventhubs/azure-messaging-eventhubs/src/main/java/com/azure/messaging/eventhubs/models/SendOptions.java

@@ -9,12 +9,21 @@
 /**
  * The set of options that can be specified when sending a set of events to influence the way in which events are sent
  * to the Event Hubs service.
+ *
+ * @see com.azure.messaging.eventhubs.EventHubProducerClient#send(Iterable, SendOptions)
+ * @see com.azure.messaging.eventhubs.EventHubProducerAsyncClient#send(Iterable, SendOptions)
  */
 @Fluent
 public class SendOptions {
     private String partitionKey;
     private String partitionId;
 
+    /**
+     * Creates a new instance.
+     */
+    public SendOptions() {
+    }
+
     /**
      * Sets a hashing key to be provided for the batch of events, which instructs the Event Hubs service to map this key
      * to a specific partition.

sdk/servicebus/azure-messaging-servicebus/src/main/java/com/azure/messaging/servicebus/ServiceBusErrorSource.java

@@ -44,4 +44,15 @@ public final class ServiceBusErrorSource extends ExpandableStringEnum<ServiceBus
     /** Error while trying to do an operation on the management link. */
     public static final ServiceBusErrorSource MANAGEMENT = fromString("MANAGEMENT",
             ServiceBusErrorSource.class);
+
+    /**
+     * Creates a new instance of the error source.  Use the existing error sources and create a new error source using
+     * {@link ServiceBusErrorSource#fromString(String, Class)}.
+     *
+     * @deprecated Use {@link ServiceBusErrorSource#fromString(String, Class)} instead.
+     */
+    @Deprecated
+    public ServiceBusErrorSource() {
+        super();
+    }
 }

sdk/servicebus/azure-messaging-servicebus/src/main/java/com/azure/messaging/servicebus/ServiceBusFailureReason.java

@@ -6,7 +6,7 @@
 import com.azure.core.util.ExpandableStringEnum;
 
 /**
- * The set of well-known reasons for an Service Bus operation failure that was the cause of an exception.
+ * The set of well-known reasons for a Service Bus operation failure that was the cause of an exception.
  */
 public final class ServiceBusFailureReason extends ExpandableStringEnum<ServiceBusFailureReason> {
     // NOTE: this list is intended to mirror the reasons we have in .net
@@ -70,4 +70,16 @@ public final class ServiceBusFailureReason extends ExpandableStringEnum<ServiceB
     /** The user doesn't have access to the entity. */
     public static final ServiceBusFailureReason UNAUTHORIZED = fromString("UNAUTHORIZED",
         ServiceBusFailureReason.class);
+
+
+    /**
+     * Creates a new instance of the failure reason.  Use the existing failure reasons and create a new failure reason
+     * using {@link ServiceBusFailureReason#fromString(String, Class)}.
+     *
+     * @deprecated Use {@link ServiceBusErrorSource#fromString(String, Class)} instead.
+     */
+    @Deprecated
+    public ServiceBusFailureReason() {
+        super();
+    }
 }

sdk/servicebus/azure-messaging-servicebus/src/main/java/com/azure/messaging/servicebus/administration/models/EmptyRuleAction.java

@@ -12,6 +12,17 @@
 public class EmptyRuleAction extends RuleAction {
     private static final EmptyRuleAction INSTANCE = new EmptyRuleAction();
 
+    /**
+     * Creates a new instance of a rule action that does nothing.
+     */
+    public EmptyRuleAction() {
+    }
+
+    /**
+     * Gets an instance of the empty rule action.
+     *
+     * @return An instance of the empty rule action.
+     */
     static EmptyRuleAction getInstance() {
         return INSTANCE;
     }

sdk/servicebus/azure-messaging-servicebus/src/main/java/com/azure/messaging/servicebus/models/AbandonOptions.java

@@ -24,6 +24,12 @@
 public final class AbandonOptions extends SettlementOptions {
     private Map<String, Object> propertiesToModify;
 
+    /**
+     * Creates a new instance of options to specify when abandoning messages.
+     */
+    public AbandonOptions() {
+    }
+
     /**
      * Gets the message properties to modify while abandoning the message.
      *