Use this method to get a list of administrators in a chat. On success, returns an Array of ChatMember objects
        that contains information about all chat administrators except other bots.
        :param chat_id:
        :return:

def get_chat_administrators(self, chat_id):
        """
        Use this method to get a list of administrators in a chat. On success, returns an Array of ChatMember objects
        that contains information about all chat administrators except other bots.
        :param chat_id:
        :return:
        """
        result = apihelper.get_chat_administrators(self.token, chat_id)
        ret = []
        for r in result:
            ret.append(types.ChatMember.de_json(r))
        return ret