Strange api contract for ListModelList.listIterator in zk5.07

	public ListIterator listIterator() {
		return _list.listIterator();
	}
	
	public ListIterator listIterator(final int index) {
		return new ListIterator() {
			private ListIterator _it = _list.listIterator(index);
			private Object _current = null;
			public boolean hasNext() {
				return _it.hasNext();
			}
			public Object next() {
				_current = _it.next();
				return _current;
			}
			public void remove() {
				final int index = _list.indexOf(_current);
				if (index >= 0) {
					removeSelection(_current);
					_it.remove();
					fireEvent(ListDataEvent.INTERVAL_REMOVED, index, index);
				}
			}
			public void add(Object arg0) {
				final int index = _it.nextIndex();
				_it.add(arg0);
				fireEvent(ListDataEvent.INTERVAL_ADDED, index, index);
			}
			public boolean hasPrevious() {
				return _it.hasPrevious();
			}
			public int nextIndex() {
				return _it.nextIndex();
			}
			public Object previous() {
				_current = _it.previous();
				return _current;
			}
			public int previousIndex() {
				return _it.previousIndex();
			}
			public void set(Object arg0) {
				final int index = _list.indexOf(_current);
				if (index >= 0) {
					_it.set(arg0);
					fireEvent(ListDataEvent.CONTENTS_CHANGED, index, index);
				}
			}
		};
	}