code: def edit_reply_markup(self, message_id, markup):
          
          return self.bot.edit_message_reply_markup(
              self.id, message_id, reply_markup=self.bot.json_serialize(markup)
          )
docs: 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