Changing to NotSupprotedImplementation

Microsoft.Azure.Cosmos/src/Resource/Container/Container.cs

@@ -1695,7 +1695,7 @@ public virtual Task<ResponseMessage> DeleteAllItemsByPartitionKeyStreamAsync(
                RequestOptions requestOptions = null,
                CancellationToken cancellationToken = default)
         {
-            throw new NotImplementedException();
+            throw new NotSupportedException("Deriving classes are expected to override this method with a valid implementation");
         }
 
 #if PREVIEW