code: public ItemRequest<Task> addComment(String task) {
      
          String path = String.format("/tasks/%s/stories", task);
          return new ItemRequest<Task>(this, Task.class, path, "POST");
      }
docs: Adds a comment to a task. The comment will be authored by the
  currently authenticated user, and timestamped when the server receives
  the request.
  
  Returns the full record for the new story added to the task.
  
  @param  task Globally unique identifier for the task.
  @return Request object