See: https://core.telegram.org/bots/api#editmessagecaption

        :param msg_identifier: Same as ``msg_identifier`` in :meth:`telepot.Bot.editMessageText`

def editMessageCaption(self, msg_identifier,
                           caption=None,
                           parse_mode=None,
                           reply_markup=None):
        """
        See: https://core.telegram.org/bots/api#editmessagecaption

        :param msg_identifier: Same as ``msg_identifier`` in :meth:`telepot.Bot.editMessageText`
        """
        p = _strip(locals(), more=['msg_identifier'])
        p.update(_dismantle_message_identifier(msg_identifier))
        return self._api_request('editMessageCaption', _rectify(p))