code: def _discovery_resp(self, data):
          
          if _is_discovery_response(data):
              _LOGGER.debug("Discovered MAC of %s: %s", self.host,
                            binascii.hexlify(data[7:13]).decode())
              return (data[7:13], data[19:25])
docs: Handle a discovery response.
  
          :param data: Payload.
          :param addr: Address tuple.
          :returns: MAC and reversed MAC.