when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String $type,
    2. String src,
    3. @USubjectViewSubjectConverter() USubjectViewSubject subject,
    4. @EnforcementViewConverter() EnforcementView enforcement,
    5. @AppealViewConverter() AppealView? appeal,
    6. @SubjectViewAvailableActionsConverter() List<SubjectViewAvailableActions>? availableActions,
    7. @ActionViewConverter() ActionView? latestAction,
    8. int? actionCount,
    9. @JsonKey.new(toJson: iso8601) DateTime createdAt,
    10. @JsonKey.new(toJson: iso8601) DateTime updatedAt,
    11. Map<String, dynamic>? $unknown,
    )
)

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( String $type,  String src, @USubjectViewSubjectConverter()  USubjectViewSubject subject, @EnforcementViewConverter()  EnforcementView enforcement, @AppealViewConverter()  AppealView? appeal, @SubjectViewAvailableActionsConverter()  List<SubjectViewAvailableActions>? availableActions, @ActionViewConverter()  ActionView? latestAction,  int? actionCount, @JsonKey(toJson: iso8601)  DateTime createdAt, @JsonKey(toJson: iso8601)  DateTime updatedAt,  Map<String, dynamic>? $unknown)  $default,) {final _that = this;
switch (_that) {
case _SubjectView():
return $default(_that.$type,_that.src,_that.subject,_that.enforcement,_that.appeal,_that.availableActions,_that.latestAction,_that.actionCount,_that.createdAt,_that.updatedAt,_that.$unknown);case _:
  throw StateError('Unexpected subclass');

}
}