 controllerDidUpdateSearch(query, inputView, navBarController) {
    // hook
  },
  controllerDidSubmitSearch(query, inputView, navBarController) {
    // hook
  },
  controllerDidCancelSearch(inputView, navBarController) {
    this.owner.front.controller.searching.set(false);
  },
})]);
ExampleStackController.defineField("sheets", [swim.TraitViewControllerSet({
  extends: true,
  attachSheetView(sheetView, sheetController) {
    super.attachSheetView(sheetView, sheetController);
    const sheetTrait = shee