code: public ItemRequest<Task> removeProject(String task) {
      
          String path = String.format("/tasks/%s/removeProject", task);
          return new ItemRequest<Task>(this, Task.class, path, "POST");
      }
docs: Removes the task from the specified project. The task will still exist
  in the system, but it will not be in the project anymore.
  
  Returns an empty data block.
  
  @param  task The task to remove from a project.
  @return Request object