/// <summary>
 /// Get activities in this conversation. This method is paged with the
 /// 'watermark' parameter.
 /// </summary>
 /// <param name='operations'>
 /// The operations group for this extension method.
 /// </param>
 /// <param name='conversationId'>
 /// Conversation ID
 /// </param>
 /// <param name='watermark'>
 /// (Optional) only returns activities newer than this watermark
 /// </param>
 /// <param name='cancellationToken'>
 /// The cancellation token.
 /// </param>
 public static async Task <ActivitySet> GetActivitiesAsync(this IConversations operations, string conversationId, string watermark = default(string), CancellationToken cancellationToken = default(CancellationToken))
 {
     using (var _result = await operations.GetActivitiesWithHttpMessagesAsync(conversationId, watermark, null, cancellationToken).ConfigureAwait(false))
     {
         return(_result.Body);
     }
 }