Use this method to get information about a member of a chat. Returns a ChatMember object on success.
        :param chat_id:
        :param user_id:
        :return:

def get_chat_member(self, chat_id, user_id):
        """
        Use this method to get information about a member of a chat. Returns a ChatMember object on success.
        :param chat_id:
        :param user_id:
        :return:
        """
        result = apihelper.get_chat_member(self.token, chat_id, user_id)
        return types.ChatMember.de_json(result)