update to allow external access to a constructor that doesn't have an…

… operation base (#21395)

* Add lambda wrapper in armclient for getting container objects in other RPs

* update xml comments

* update to add externally accesible constructor that doesn't have an operation base like armclient as the parent

sdk/resourcemanager/Azure.ResourceManager.Core/src/ContainerBase.cs

@@ -1,6 +1,10 @@
 // Copyright (c) Microsoft Corporation. All rights reserved.
 // Licensed under the MIT License.
 
+using System;
+using Azure.Core;
+using Azure.Core.Pipeline;
+
 namespace Azure.ResourceManager.Core
 {
     /// <summary>
@@ -34,6 +38,18 @@ internal ContainerBase(ClientContext clientContext, ResourceIdentifier id)
         {
         }
 
+        /// <summary>
+        /// Initializes a new instance of the <see cref="ContainerBase"/> class.
+        /// </summary>
+        /// <param name="options"> The options to use. </param>
+        /// <param name="credential"> The credential to use. </param>
+        /// <param name="baseUri"> The base uri to use. </param>
+        /// <param name="pipeline"> The http pipeline policy to use. </param>
+        protected ContainerBase(ArmClientOptions options, TokenCredential credential, Uri baseUri, HttpPipeline pipeline)
+            : this(new ClientContext(options, credential, baseUri, pipeline))
+        {
+        }
+
         /// <summary>
         /// Initializes a new instance of the <see cref="ContainerBase"/> class.
         /// </summary>