/// <summary>
 /// Send an activity
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='conversationId'>
 /// Conversation ID
 /// </param>
 /// <param name='activity'>
 /// Activity to send
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <ResourceResponse> PostActivityAsync(this IConversations operations, string conversationId, Activity activity, CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.PostActivityWithHttpMessagesAsync(conversationId, activity, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }