/**
  * Generates a subtree with nodeId as root node
  *
  * @param nodeId
  */
 public void setSubTree(String nodeId, String level) {
   setIsSubTree(true);
   try {
     data =
         ModuleReferenceDataClientTreeData.selectSubTree(
             conn, (lang.equals("") ? "en_US" : lang), nodeId);
     // addLinks();
     setLevel(new Integer(level).intValue());
     setIcons();
   } catch (ServletException ex) {
     ex.printStackTrace();
     data = null;
   }
 }