when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String? brand,
    2. String? country,
    3. int? expYear,
    4. int? expMonth,
    5. String? funding,
    6. String? last4,
    7. String? preferredNetwork,
    8. List<String>? availableNetworks,
    )
)

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? brand,  String? country,  int? expYear,  int? expMonth,  String? funding,  String? last4,  String? preferredNetwork,  List<String>? availableNetworks)  $default,) {final _that = this;
switch (_that) {
case _CardPaymentMethod():
return $default(_that.brand,_that.country,_that.expYear,_that.expMonth,_that.funding,_that.last4,_that.preferredNetwork,_that.availableNetworks);case _:
  throw StateError('Unexpected subclass');

}
}