code: public static void installOn(
          CmsSitemapController controller,
          CmsTreeItem treeItem,
          CmsUUID entryId,
          String sitePath,
          boolean contextmenu) {
  
          CmsSitemapHoverbar hoverbar = new CmsSitemapHoverbar(controller, entryId, sitePath, contextmenu);
          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
  @param sitePath the entry site path
  @param contextmenu flag to control whether the context menu should be shown