pkg/front_end/testcases/dart2js/issue47916b.dart.textual_outline.expect

abstract class A<T> {
  const factory A() = B;
}

abstract class B<S, T> implements A<T> {
  const factory B() = C;
}

class C<T, S, U> implements B<S, T> {
  const C();
}

main() {}