@Override
	public int[] getPath(TreeNode<E> child) {
		final TreeNode<E> root = getRoot();
		List<Integer> p = new ArrayList<Integer>();
		while (root != child) {
			TreeNode<E> parent = child.getParent();
			if (parent != null) {
				for (int i = 0, j = parent.getChildCount(); i < j; i++) {
					if (parent.getChildAt(i) == child) {
						p.add(0, i);
						break;
					}
				}
				child = parent;
			}
		}
		final Integer[] objs = p.toArray(new Integer[p.size()]);
		final int[] path = new int[objs.length];
		for (int i = 0; i < objs.length; i++)
			path[i] = objs[i].intValue();
		return path;
	}