code: def register_service(self, info):
          
          self.check_service(info)
          self.services[info.name.lower()] = info
  
          # zone transfer
          self.transfer_zone(info.type)
          self.announce_service(info.name)
docs: Registers service information to the network with a default TTL
          of 60 seconds.  Zeroconf will then respond to requests for
          information for that service.  The name of the service may be
          changed if needed to make it unique on the network.