Update AutoRest C# version to 3.0.0-beta.20211222.1 (Azure#26024)

Author: azure-sdk

eng/Packages.Data.props

@@ -147,7 +147,7 @@
     All should have PrivateAssets="All" set so they don't become package dependencies
   -->
   <ItemGroup>
-    <PackageReference Update="Microsoft.Azure.AutoRest.CSharp" Version="3.0.0-beta.20211216.2" PrivateAssets="All" />
+    <PackageReference Update="Microsoft.Azure.AutoRest.CSharp" Version="3.0.0-beta.20211222.1" PrivateAssets="All" />
     <PackageReference Update="Azure.ClientSdk.Analyzers" Version="0.1.1-dev.20210903.4" PrivateAssets="All" />
     <PackageReference Update="coverlet.collector" Version="1.3.0" PrivateAssets="All" />
     <PackageReference Update="Microsoft.CodeAnalysis.FxCopAnalyzers" Version="3.3.1" PrivateAssets="All" />

sdk/appconfiguration/Azure.ResourceManager.AppConfiguration/api/Azure.ResourceManager.AppConfiguration.netstandard2.0.cs

@@ -15,6 +15,7 @@ protected ConfigurationStore() { }
         protected override Azure.ResourceManager.ResourceType ValidResourceType { get { throw null; } }
         public virtual Azure.Response<Azure.ResourceManager.AppConfiguration.ConfigurationStore> AddTag(string key, string value, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.Response<Azure.ResourceManager.AppConfiguration.ConfigurationStore>> AddTagAsync(string key, string value, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
+        public static Azure.ResourceManager.ResourceIdentifier CreateResourceIdentifier(string subscriptionId, string resourceGroupName, string configStoreName) { throw null; }
         public virtual Azure.ResourceManager.AppConfiguration.Models.ConfigurationStoreDeleteOperation Delete(bool waitForCompletion = true, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.ResourceManager.AppConfiguration.Models.ConfigurationStoreDeleteOperation> DeleteAsync(bool waitForCompletion = true, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual Azure.Response<Azure.ResourceManager.AppConfiguration.ConfigurationStore> Get(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
@@ -75,6 +76,7 @@ protected PrivateEndpointConnection() { }
         public virtual Azure.ResourceManager.AppConfiguration.PrivateEndpointConnectionData Data { get { throw null; } }
         public virtual bool HasData { get { throw null; } }
         protected override Azure.ResourceManager.ResourceType ValidResourceType { get { throw null; } }
+        public static Azure.ResourceManager.ResourceIdentifier CreateResourceIdentifier(string subscriptionId, string resourceGroupName, string configStoreName, string privateEndpointConnectionName) { throw null; }
         public virtual Azure.ResourceManager.AppConfiguration.Models.PrivateEndpointConnectionDeleteOperation Delete(bool waitForCompletion = true, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.ResourceManager.AppConfiguration.Models.PrivateEndpointConnectionDeleteOperation> DeleteAsync(bool waitForCompletion = true, System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual Azure.Response<Azure.ResourceManager.AppConfiguration.PrivateEndpointConnection> Get(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
@@ -114,6 +116,7 @@ protected PrivateLinkResource() { }
         public virtual Azure.ResourceManager.AppConfiguration.PrivateLinkResourceData Data { get { throw null; } }
         public virtual bool HasData { get { throw null; } }
         protected override Azure.ResourceManager.ResourceType ValidResourceType { get { throw null; } }
+        public static Azure.ResourceManager.ResourceIdentifier CreateResourceIdentifier(string subscriptionId, string resourceGroupName, string configStoreName, string groupName) { throw null; }
         public virtual Azure.Response<Azure.ResourceManager.AppConfiguration.PrivateLinkResource> Get(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Threading.Tasks.Task<Azure.Response<Azure.ResourceManager.AppConfiguration.PrivateLinkResource>> GetAsync(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }
         public virtual System.Collections.Generic.IEnumerable<Azure.ResourceManager.Resources.Models.Location> GetAvailableLocations(System.Threading.CancellationToken cancellationToken = default(System.Threading.CancellationToken)) { throw null; }