def METHOD_NAME(self):
    """Set up the default library registry; no other registries exist yet."""
    service, is_new = get_one_or_create(
        self._db, ExternalIntegration, protocol=self.opds_registration,
        goal=self.goal
    )
    if is_new:
        service.url = (
            RemoteRegistry.DEFAULT_LIBRARY_REGISTRY_URL
        )