}
private TabPanelContract createPages(InteractionUnit<StereoTypes> interactionUnit, EventBus eventBus) {
final Pages pagedView = new Pages();
pagedView.addBeforeSelectionHandler(new NavigationHandler(interactionUnit, childUnits, pagedView));
// activation listener
eventBus.addHandler(SystemEvent.TYPE,
new ChildActivationHandler<Pages>(pagedView, childUnits, new ChildUnitCommand<Pages>() {