pkg/front_end/testcases/extension_types/issue52542.dart.textual_outline_modelled.expect

class None {
  const None();
}

extension type const Option<V>(Object? _value) {
  V get value => _value is None ? (throw StateError("No Value")) : _value as V;
  static const Option<Never> none = const None() as Option<Never>;
}