@Override
 public int compare(ElementNode n1, ElementNode n2) {
   if (n1.getDelegate() instanceof ClassMemberWithElement
       && n2.getDelegate() instanceof ClassMemberWithElement) {
     return ((ClassMemberWithElement) n1.getDelegate()).getElement().getTextOffset()
         - ((ClassMemberWithElement) n2.getDelegate()).getElement().getTextOffset();
   }
   return n1.getOrder() - n2.getOrder();
 }