def get_feedback_message_references(user_id):
 model = feedback_models.UnsentFeedbackEmailModel.get(user_id, strict=False)
 if (model is None):
  return []
 return [feedback_domain.FeedbackMessageReference(reference['exploration_id'], reference['thread_id'], reference['message_id']) for reference in model.feedback_message_references]

def get_feedback_message_references ( user_id ) : model = feedback_models . UnsentFeedbackEmailModel . get ( user_id , strict = False ) if ( model is None ) : return [ ] return [ feedback_domain . FeedbackMessageReference ( reference [ 'exploration_id' ] , reference [ 'thread_id' ] , reference [ 'message_id' ] ) for reference in model . feedback_message_references ]
fetches all feedbackmessagereference objects written by the given user。 args: user_id: str .