code: def _message_received(self, msg):
          
  
          msg = Message.from_node(msg)
          return self.dispatch(msg)
docs: Callback run when an XMPP Message is reveived.
          This callback delivers the message to every behaviour
          that is waiting for it. First, the aioxmpp.Message is
          converted to spade.message.Message
  
          Args:
            msg (aioxmpp.Messagge): the message just received.
  
          Returns:
              list(asyncio.Future): a list of futures of the append of the message at each matched behaviour.