private static void addToWorkList(ClassDef def, ArrayList<ClassDef> worklist) {
final Ref<? extends Type> ref = def.superType();
if (ref != null) {
addTypeToWorkList(worklist, ref);
}
final List<X10FieldDef> props = def.properties();
for (X10FieldDef p : props) {
addTypeToWorkList(worklist, p.type());
}
}
