whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String $type,
    2. String did,
    3. String handle,
    4. String? displayName,
    5. String? pronouns,
    6. String? description,
    7. String? avatar,
    8. ProfileAssociated? associated,
    9. DateTime? indexedAt,
    10. DateTime? createdAt,
    11. ViewerState? viewer,
    12. List<Label>? labels,
    13. VerificationState? verification,
    14. StatusView? status,
    15. Map<String, dynamic>? $unknown,
    )?
)

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( String $type,  String did,  String handle,  String? displayName,  String? pronouns,  String? description,  String? avatar, @ProfileAssociatedConverter()  ProfileAssociated? associated,  DateTime? indexedAt,  DateTime? createdAt, @ViewerStateConverter()  ViewerState? viewer, @LabelConverter()  List<Label>? labels, @VerificationStateConverter()  VerificationState? verification, @StatusViewConverter()  StatusView? status,  Map<String, dynamic>? $unknown)?  $default,) {final _that = this;
switch (_that) {
case _ProfileView() when $default != null:
return $default(_that.$type,_that.did,_that.handle,_that.displayName,_that.pronouns,_that.description,_that.avatar,_that.associated,_that.indexedAt,_that.createdAt,_that.viewer,_that.labels,_that.verification,_that.status,_that.$unknown);case _:
  return null;

}
}