code: @PostConstruct
      public synchronized void initialize() {
          final FwCoreDirection direction = assistCoreDirection();
          final SMailDeliveryDepartment deliveryDepartment = direction.assistMailDeliveryDepartment();
          postOffice = deliveryDepartment != null ? newPostOffice(deliveryDepartment) : null;
          prepareHotDeploy();
          showBootLogging();
      }
docs: Initialize this component. <br>
  This is basically called by DI setting file.