whenOrNull<TResult extends Object?> method

  1. @optionalTypeArgs
TResult? whenOrNull<TResult extends Object?>(
  1. TResult? $default(
    1. String id,
    2. AtsNsStatus status,
    3. bool? receive90Days,
    4. AtsNsProjectId? projectId,
    5. String? certificate,
    6. String? certificatePassword,
    7. String cnpj,
    8. String? inscriptionId,
    9. String? businessName,
    10. String? companyName,
    11. AtsIcmsType? icmsType,
    12. List<String>? emails,
    13. List<String>? phoneNumbers,
    14. List<AtsNsAddress>? addresses,
    15. DateTime? expirationDate,
    )?
)

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 id, @AtsNsStatusConverter()  AtsNsStatus status,  bool? receive90Days, @AtsNsProjectIdOrNullConverter()  AtsNsProjectId? projectId,  String? certificate,  String? certificatePassword,  String cnpj,  String? inscriptionId,  String? businessName,  String? companyName, @AtsIcmsTypeOrNullConverter()  AtsIcmsType? icmsType,  List<String>? emails,  List<String>? phoneNumbers,  List<AtsNsAddress>? addresses, @JsonKey(name: 'expirationDateUnix')@TimestampOrNullConverter()  DateTime? expirationDate)?  $default,) {final _that = this;
switch (_that) {
case _AtsNsLicense() when $default != null:
return $default(_that.id,_that.status,_that.receive90Days,_that.projectId,_that.certificate,_that.certificatePassword,_that.cnpj,_that.inscriptionId,_that.businessName,_that.companyName,_that.icmsType,_that.emails,_that.phoneNumbers,_that.addresses,_that.expirationDate);case _:
  return null;

}
}