/// <summary>Snippet for UpdateTopic</summary>
 public void UpdateTopic_RequestObject()
 {
     // Snippet: UpdateTopic(UpdateTopicRequest,CallSettings)
     // Create client
     PublisherServiceApiClient publisherServiceApiClient = PublisherServiceApiClient.Create();
     // Initialize request argument(s)
     UpdateTopicRequest request = new UpdateTopicRequest
     {
         Topic      = new Topic(),
         UpdateMask = new FieldMask(),
     };
     // Make the request
     Topic response = publisherServiceApiClient.UpdateTopic(request);
     // End snippet
 }