public void dbugChangeSiblingIndex(CssBox owner, CssBox box, int newIndex)
{
//for compat with old version
//find target linked node
LinkedListNode<CssBox> foundNode = this.dbugGetNodeAtIndex(newIndex);
//1. remove from current box
this.Remove(box);
//2.
CssBox.UnsafeSetNodes(box, owner, this._boxes.AddBefore(foundNode, box));
}
#endif