How to get an icon of an object in Windchill

public static String getIcon(WTObject wtobject) throws Exception {
IconDelegate icondelegate = IconDelegateFactory.getInstance().getIconDelegate(wtobject);
IconSelector iconselector;
for(iconselector = icondelegate.getStandardIconSelector(); !iconselector.isResourceKey(); iconselector = icondelegate.getStandardIconSelector()){
icondelegate = icondelegate.resolveSelector(iconselector);
}
URLFactory urlfactory = new URLFactory();
return urlfactory.getHREF(iconselector.getIconKey());
}