copy.setExpanded(this.isExpanded());
    public TreeImageDisplay copy()    {        TreeImageSet copy = new TreeImageSet(this.getUserObject());        copy.setChildrenLoaded(new Boolean(this.isChildrenLoaded()));        copy.setNumberItems(this.getNumberItems());        copy.setHighLight(this.getHighLight());        copy.setToolTip(this.getToolTip());        Iterator i = this.getChildrenDisplay().iterator();        while (i.hasNext()) {            copy.addChildDisplay(((TreeImageDisplay) i.next()).copy());        }        return copy;    }