when<TResult extends Object?> method

@optionalTypeArgs TResult when<TResult extends Object?>(TResult $default(int id, String name, @JsonKey.new(name: 'images_url') List imagesUrl))

A switch-like method, using callbacks.

As opposed to map, this offers destructuring. It is equivalent to doing:

switch (sealedClass) {
  case Subclass(:final field):
    return ...;
  case Subclass2(:final field2):
    return ...;
}

Implementation

@optionalTypeArgs
TResult when<TResult extends Object?>(
  TResult Function(int id, String name,
          @JsonKey(name: 'images_url') List<dynamic> imagesUrl)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _IsibookTransactionSpaceInfo():
      return $default(_that.id, _that.name, _that.imagesUrl);
  }
}