whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String? name, String? familyName, String? givenName, String? basfLocalEn, String? userName, String? sub, String? upn, @JsonKey.new(name: 'picture') String? pictureUrl, String? email,)?)

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? name,  String? familyName,  String? givenName,  String? basfLocalEn,  String? userName,  String? sub,  String? upn, @JsonKey(name: 'picture')  String? pictureUrl,  String? email)?  $default,) {final _that = this;
switch (_that) {
case _User() when $default != null:
return $default(_that.name,_that.familyName,_that.givenName,_that.basfLocalEn,_that.userName,_that.sub,_that.upn,_that.pictureUrl,_that.email);case _:
  return null;

}
}