@Override
public Collection<NavigationItemBuilder> getBuilders(ClientFactory clientFactory, EventBus eventBus) {
Collection<NavigationItemBuilder> navigationItemBuilders = new ArrayList<NavigationItemBuilder>();
navigationItemBuilders.add(new BrowseTreeBuilder(clientFactory, eventBus));
navigationItemBuilders.add(new ModulesTreeBuilder(clientFactory, eventBus, AUTHOR_PERSPECTIVE));
navigationItemBuilders.add(new QATreeBuilder(clientFactory.getPlaceController()));