code: public void showIsEmptyLabel() {
  
          CmsSimpleListItem item = new CmsSimpleListItem();
          Label isEmptyLabel = new Label(Messages.get().key(Messages.GUI_CATEGORIES_IS_EMPTY_0));
          item.add(isEmptyLabel);
          m_scrollList.add(item);
      }
docs: Shows the tab list is empty label.<p>