pkg/front_end/testcases/inference/index_assign_operator_return_type.dart.textual_outline.expect

// @dart = 2.9
library test;

class C {
  operator []=(dynamic index, dynamic value) {}
}

abstract class I {
  void operator []=(dynamic index, dynamic value) {}
}

class D extends C implements I {
  operator []=(dynamic index, dynamic value) {}
}

main() {}