code: @Override
      public void handleStateChangeNotification(final StateChangeNotification event) {
          switch (event.getType()) {
              case BEFORE_LOAD:
                  break;
              case BEFORE_INIT:
                  this.jrebirthInitialized = true;
                  break;
              case BEFORE_START:
                  hideStage();
                  break;
              default:
          }
      }
docs: {@inheritDoc}