whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String? id, String? address1, String? address2, String? city, String? company, String? country, String? countryCode, String? firstName, String? lastName, String? formattedArea, String? latitude, String? longitude, String? name, String? phone, String? province, String? provinceCode, String? zip,)?)

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,  String? address1,  String? address2,  String? city,  String? company,  String? country,  String? countryCode,  String? firstName,  String? lastName,  String? formattedArea,  String? latitude,  String? longitude,  String? name,  String? phone,  String? province,  String? provinceCode,  String? zip)?  $default,) {final _that = this;
switch (_that) {
case _Address() when $default != null:
return $default(_that.id,_that.address1,_that.address2,_that.city,_that.company,_that.country,_that.countryCode,_that.firstName,_that.lastName,_that.formattedArea,_that.latitude,_that.longitude,_that.name,_that.phone,_that.province,_that.provinceCode,_that.zip);case _:
  return null;

}
}