// @dart = 2.5
import 'messages_with_types_opt_in.dart';

class SuperOut {
  String nullableSame() => "foo";
  String nonNullableSame() => "bar";
  int nullableBad<T>(T t) => 1;
  int nonNullableBad<T>(T t) => 2;
}

class SubOutOut extends SuperOut {
  String nullableSame() => "foo";
  String nonNullableSame() => "bar";
  T nullableBad<T>(T t) => null;
  T nonNullableBad<T>(T t) => t;
}

class SubInOut extends SuperIn {
  String nullableSame() => "foo";
  String nonNullableSame() => "bar";
  T nullableBad<T>(T t) => null;
  T nonNullableBad<T>(T t) => t;
}

String legacyVar = "legacy";
testOptOut() {}