when<TResult extends Object?> method Null safety

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. {required TResult initial(
      ),
    1. required TResult inProgress(
      1. bool like
      ),
    2. required TResult success(
      1. bool like
      ),
    3. required TResult failure(
      1. Failure failure
      )}
    )
    @optionalTypeArgs, inherited

    Implementation

    @optionalTypeArgs
TResult when<TResult extends Object?>({
  required TResult Function() initial,
  required TResult Function(bool like) inProgress,
  required TResult Function(bool like) success,
  required TResult Function(Failure failure) failure,
}) =>
    throw _privateConstructorUsedError;