code: @Override
      public void show() {
          final Stage stage = getStage();
          stage.getRoot().clearChildren();
          LmlUtilities.appendActorsToStage(stage, actors);
      }
docs: Invoked after previous view is hidden and this view is about to show. Might be called when the view is being
  reloaded. Clears previous stage actors and adds managed actor to stage. If overridden, call super.