def attach_service(cls, service):
        """ Allows you to attach one TCP and one HTTP service

        deprecated:: 2.1.73 use http and tcp specific methods
        :param service: A trellio TCP or HTTP service that needs to be hosted
        """
        if isinstance(service, HTTPService):
            cls._http_service = service
        elif isinstance(service, TCPService):
            cls._tcp_service = service
        else:
            cls._logger.error('Invalid argument attached as service')
        cls._set_bus(service)