private TabPanelContract createEditorPanel(final InteractionUnit interactionUnit, final EventBus eventBus) {
final DefaultTabLayoutPanel tabLayoutpanel = new DefaultTabLayoutPanel(40, Style.Unit.PX);
tabLayoutpanel.addStyleName("default-tabpanel");
tabLayoutpanel.addBeforeSelectionHandler(new NavigationHandler(interactionUnit, childUnits, tabLayoutpanel));
/* tabLayoutpanel.addAttachHandler(new AttachEvent.Handler() {
@Override
public void onAttachOrDetach(AttachEvent attachEvent) {