docs: private void addToolbars() {
  
          m_revertButton = CmsToolBar.createButton(
              FontOpenCms.REDO,
              CmsVaadinUtils.getMessageText(Messages.GUI_USERMANAGEMENT_GROUPS_TOGGLE_0));
          m_revertButton.addClickListener(new ClickListener() {
  
              private static final long serialVersionUID = 8265075332953321274L;
  
              public void buttonClick(ClickEvent event) {
  
                  toggleTable();
  
              }
  
          });
          if (m_stateBean.isReverse()) {
              CmsVaadinUtils.toggleButton(m_revertButton);
          }
          m_uiContext.addToolbarButton(m_revertButton);
      }