@base.remotable_classmethod
def get_by_host_and_topic(cls, context, host, topic):
    db_service = db.service_get_by_host_and_topic(context, host, topic)
    return cls._from_db_object(context, cls(), db_service)
@base.remotable_classmethod
def get_by_host_and_topic(cls, context, host, topic):
    db_service = db.service_get_by_host_and_topic(context, host, topic)
    return cls._from_db_object(context, cls(), db_service)