import 'value_class_support_lib.dart';

class Animal {
  final int? numberOfLegs;
  Animal({required this.numberOfLegs});
}

@valueClass
class Cat extends Animal {
  final int? numberOfWhiskers;
}

class Foo {
  int? bar, bar2;
  Foo({this.bar, this.bar2});
  Foo copyWith({int bar, int bar2}) {}
}

@valueClass
class A {}

main() {}