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Solve the following problem using Python, implementing the functions described below, one line at a time
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Description:
 def edit_reply_markup(self, message_id, markup):
 """ Edit only reply markup of the message in this chat. :param int message_id: ID of the message to edit :param dict markup: Markup options """

        return self.bot.edit_message_reply_markup(
            self.id, message_id, reply_markup=self.bot.json_serialize(markup)
        )