code: def list_after(self, message_id, limit=None):
          
          return self.list(after_id=message_id, limit=limit)
docs: Return a page of group messages created after a message.
  
          This is used to page forwards through messages.
  
          :param str message_id: the ID of a message
          :param int limit: maximum number of messages per page
          :return: group messages
          :rtype: :class:`~groupy.pagers.MessageList`