List users in a list

        :param list_id: list ID number
        :return: list of :class:`~responsebot.models.User` objects

def list_members(self, list_id):
        """
        List users in a list

        :param list_id: list ID number
        :return: list of :class:`~responsebot.models.User` objects
        """
        return [User(user._json) for user in self._client.list_members(list_id=list_id)]