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

// @dart = 2.9
abstract class A {
  A foo() => null;
}

abstract class B extends A {
  B foo();
}

class C {
  noSuchMethod(_) => null;
}

class D extends C implements B {}

main() {}