@Override
 public List<Item> subList(final int arg0, final int arg1) {
   ItemVector result = new ItemVector(doc_, false);
   for (int i = arg0; i <= arg1; i++) {
     result.add(itemNames_.get(i));
   }
   return result;
 }
 @Override
 @Deprecated
 public void insertElementAt(final Item arg0, final int arg1) {
   add(arg1, arg0);
 }
 @Override
 @Deprecated
 public void addElement(final Item arg0) {
   add(arg0);
 }