pkg/front_end/testcases/general/constructor_inference_interdependence.dart.textual_outline.expect

class C {}

sealed class B<X> {
  final C? Function()? foo;
  const B({required this.foo});
  const factory B.redir({C? Function()? foo}) = A;
}

mixin M {}

final class A<X> extends B<X> with M {
  const A({super.foo = null}) : super();
}

main() {}