docs: public void updateEditorMode() {
  
          CmsClientSitemapEntry entry = getSitemapEntry();
          getListItemWidget().setIcon(CmsSitemapView.getInstance().getIconForEntry(entry));
          setAdditionalStyles(entry, getListItemWidget());
          for (Widget child : m_children) {
              if (child instanceof CmsSitemapTreeItem) {
                  ((CmsSitemapTreeItem)child).updateEditorMode();
              }
          }
      }