code: protected void initializeIntent(Intent intent) {
          intent.putExtra(UploadService.PARAM_TASK_PARAMETERS, params);
  
          Class taskClass = getTaskClass();
          if (taskClass == null)
              throw new RuntimeException("The request must specify a task class!");
  
          intent.putExtra(UploadService.PARAM_TASK_CLASS, taskClass.getName());
      }
docs: Write any upload request data to the intent used to start the upload service.<br>
  Override this method in subclasses to add your own custom parameters to the upload task.
  
  @param intent the intent used to start the upload service