/// <summary>
 /// Lists the available namespaces within a resourceGroup.  (see
 /// http://msdn.microsoft.com/en-us/library/azure/hh780759.aspx for
 /// more information)
 /// </summary>
 /// <param name='operations'>
 /// Reference to the
 /// Microsoft.Azure.Management.NotificationHubs.INamespaceOperations.
 /// </param>
 /// <param name='resourceGroupName'>
 /// Required. The name of the resource group. If resourceGroupName
 /// value is null the method lists all the namespaces within
 /// subscription
 /// </param>
 /// <returns>
 /// The response of the List Namespace operation.
 /// </returns>
 public static Task <NamespaceListResponse> ListAsync(this INamespaceOperations operations, string resourceGroupName)
 {
     return(operations.ListAsync(resourceGroupName, CancellationToken.None));
 }