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

class Super {
  void method() {}
  int property = 42;
}

mixin Mixin on Super {
  void method() {}
  int get property {}
  void set property(int value) {}
}

class Class1 extends Super with Mixin {}

class Class2 with Mixin implements Super {}