docs: def get_feedback(self, question_id):
          """get feedback for item"""
          response = self.get_response(question_id)
          item = self._get_item(response.get_item_id())
          if response.is_answered():
              try:
                  return item.get_feedback_for_response(response)
              except errors.IllegalState:
                  pass
          else:
              return item.get_feedback()