tracker = scoreboardAndTracker;
logger = loggerForBuiltinService(REGISTRY_SHUTDOWN_HUB_SERVICE_ID);
registryShutdownHub = new RegistryShutdownHubImpl(logger);
ptmImpl.registerForShutdown(registryShutdownHub);
lifecycles.put("singleton", new SingletonServiceLifecycle());
registryShutdownHub.addRegistryShutdownListener(new Runnable()
{