maybeWhen<TResult extends Object?> method

@optionalTypeArgs TResult maybeWhen<TResult extends Object?>(TResult $default(String name, String? description, String? sku, String? quantity, PPItemCategory? category, PPUnitAmount? tax, PPUnitAmount unitAmount,)?, { required TResult orElse(), })

A variant of when that fallback to an orElse callback.

It is equivalent to doing:

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

Implementation

@optionalTypeArgs
TResult maybeWhen<TResult extends Object?>(
  TResult Function(
          String name,
          String? description,
          String? sku,
          String? quantity,
          PPItemCategory? category,
          PPUnitAmount? tax,
          PPUnitAmount unitAmount)?
      $default, {
  required TResult orElse(),
}) {
  final _that = this;
  switch (_that) {
    case _PPItems() when $default != null:
      return $default(_that.name, _that.description, _that.sku,
          _that.quantity, _that.category, _that.tax, _that.unitAmount);
    case _:
      return orElse();
  }
}