flutter - Flutter DiagnosticableTreeMixin 与 @freezed

Question

我正在尝试实现提供者类持有使用@freezed 生成的状态：

@injectable
class NewClientFormProvider with ChangeNotifier, DiagnosticableTreeMixin {
  final IClientRepository _clientRepository;
  NewClientFormState _state = NewClientFormState.initial();

  NewClientFormState get state => _state;

  NewClientFormProvider(this._clientRepository);

  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(
      DiagnosticsProperty<NewClientFormState>("state", _state),
    );
  }
}

@freezed
class NewClientFormState with _$NewClientFormState, DiagnosticableTreeMixin {
  const factory NewClientFormState({
    required Client client,
    required bool isSubmitting,
    required Option<Either<SaveFailure, Client>> saveFailureOrSuccessOption,
  }) = _NewClientFormState;

  const NewClientFormState._();

  @override
  void debugFillProperties(DiagnosticPropertiesBuilder properties) {
    super.debugFillProperties(properties);
    properties.add(
      DiagnosticsProperty<String>("companyName", client.companyName),
    );
  }
}

一切都已成功生成并编译，但未使用覆盖的方法，因此 DevTools 无法读取当前状态值（现在应该是可见属性“companyName”。我也尝试排除 DiagnosticableTreeMixin 并仅实现 toString()，但这是也没有使用（使用覆盖的冻结版本）。