code: public static void installOn(CmsSitemapController controller, CmsTreeItem treeItem, CmsUUID entryId) {
  
          CmsSitemapHoverbar hoverbar = new CmsSitemapHoverbar(controller, entryId, true, true, null);
          installHoverbar(hoverbar, treeItem.getListItemWidget());
      }
docs: Installs a hover bar for the given item widget.<p>
  
  @param controller the controller
  @param treeItem the item to hover
  @param entryId the entry id