code: def received_infos(self, type=None, failed=None):
          
          if failed is not None:
              raise ValueError(
                  "You should not pass a failed argument to received_infos. "
                  "received_infos is "
                  "unusual in that a failed argument cannot be passed. This is "
                  "because there is inherent uncertainty in what it means for a "
                  "received info to be failed. The received_infos function will "
                  "only ever check not-failed transmissions. "
                  "If you want to check failed transmissions "
                  "you should do so via sql queries."
              )
  
          if type is None:
              type = Info
  
          if not issubclass(type, Info):
              raise TypeError(
                  "Cannot get infos of type {} " "as it is not a valid type.".format(type)
              )
  
          transmissions = (
              Transmission.query.with_entities(Transmission.info_id)
              .filter_by(destination_id=self.id, status="received", failed=False)
              .all()
          )
  
          info_ids = [t.info_id for t in transmissions]
          if info_ids:
              return type.query.filter(type.id.in_(info_ids)).all()
          else:
              return []
docs: Get infos that have been sent to this node.
  
          Type must be a subclass of info, the default is Info.