whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(bool status, String? message, String? error, @JsonKey.new(name: 'stripe_data') dynamic stripeData, @JsonKey.new(name: 'reservation_id') int? reservationId, List<IsibookReservationExtra>? extras, IsibookMyReservation? reservation,)?)

A variant of when that fallback to returning null

It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case _:
    return null;
}

Implementation

@optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  TResult? Function(
          bool status,
          String? message,
          String? error,
          @JsonKey(name: 'stripe_data') dynamic stripeData,
          @JsonKey(name: 'reservation_id') int? reservationId,
          List<IsibookReservationExtra>? extras,
          IsibookMyReservation? reservation)?
      $default,
) {
  final _that = this;
  switch (_that) {
    case _IsibookMyReservationResponse() when $default != null:
      return $default(
          _that.status,
          _that.message,
          _that.error,
          _that.stripeData,
          _that.reservationId,
          _that.extras,
          _that.reservation);
    case _:
      return null;
  }
}