Need a method in UIFactoryExt (unable to add custom icons for ToolAction-s)

We need a method

need a method in UIFactory.UIFactoryExt

"

        public URL getIconURL(String uiKey) {
            String r = getI18NString(uiKey + ".icon");

            URL url = altClass.getResource(r);

            if (url == null)
                return super.getIconURL(uiKey);

            return url;
        }

"

If there is no such a method, there is not way to lookup for the Icon-s
in jtExt.