pagingManager = createPagingManager();
resourceManager = new ResourceManagerImpl((int) (configuration.getTransactionTimeout() / 1000),
configuration.getTransactionTimeoutScanPeriod(),
scheduledPool);
postOffice = new PostOfficeImpl(this,
storageManager,
pagingManager,
queueFactory,
managementService,
configuration.getMessageExpiryScanPeriod(),