void addChilds(MenuExtra menu, MenuExtra res) {
if (DEBUG_ME) System.out.println("gerando " + menu.getLabel());
Iterator i = menu.iterator();
while (i.hasNext()) {
Map.Entry entry = (Map.Entry) i.next();
MenuExtra m = (MenuExtra) entry.getValue();
MenuExtra r = (MenuExtra) m.clone();
addChilds(m, r);
if (r.hasChildren() || r.hasPath()) {
res.addChild(r);
}
}
}
