public MenuSectionController() {
   super();
   List<View> list = new ArrayList<View>();
   menuViewMap.put("", list);
   menu.setStyleName("ks-menu-layout-menu");
   rightPanel.setStyleName("ks-menu-layout-rightColumn");
   collapsablePanel.addStyleName("ks-menu-layout-leftColumn");
   layout.addStyleName("ks-menu-layout");
   menu.setTopLevelItems(topLevelMenuItems);
   collapsablePanel.setContent(leftPanel);
   leftPanel.add(menu);
   leftPanel.add(sideBar);
   rightPanel.add(header);
   rightPanel.add(infoPanel);
   rightPanel.add(topButtonPanel);
   rightPanel.add(contentPanel);
   rightPanel.add(bottomButtonPanel);
   layout.add(collapsablePanel);
   layout.add(rightPanel);
   header.setVisible(false);
   this.showPrint(true);
   this.initWidget(layout);
 }
 public void removeMenuNavigation() {
   collapsablePanel.removeFromParent();
 }