code: def update_list(self, list_id, name=None, mode=None, description=None):
          
          return List(tweepy_list_to_json(
              self._client.update_list(list_id=list_id, name=name, mode=mode, description=description))
          )
docs: Update a list
  
          :param list_id: list ID number
          :param name: New name for the list
          :param mode: :code:`'public'` (default) or :code:`'private'`
          :param description: New description of the list
          :return: The updated list object
          :rtype: :class:`~responsebot.models.List`