ctor() {
    super();
    ExampleStackController.initFasteners(this);
  }
}
ExampleStackController.defineField("navBar", [swim.TraitViewControllerRef({
  extends: true,
  attachNavBarView(navBarView, navBarController) {
    navBarView.barHeight.set(48);
    super.attachNavBarView(navBarView, navBarController);
  },
  controllerDidPressSearchButton(input, event, navBarController) {
    this.owner.front.controller.searching.set(true);
    navBarController.searchInput.controller.input.view.node.focus();
  },
 