static Set<Field> fieldObjectsInFieldOrder(Class c, Set<Field> fields) {
  try {
    var byName = mapToKey(f -> f.getName(), fields);
    new LinkedHashSet<Field> out;
    fOr (S name : getFieldOrder(c)) {
      Field f = byName.get(name);
      if (f != null) {
        byName.remove(name);
        out.add(f);
      }
    }
    addAll(out, fields);
    ret out;
  } catch print {
    ret fields;
  }
}