when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String paymentMethodId,
    2. String? cvc,
    3. BillingDetails? billingDetails,
    4. ShippingDetails? shippingDetails,
    )
)

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 paymentMethodId,  String? cvc,  BillingDetails? billingDetails,  ShippingDetails? shippingDetails)  $default,) {final _that = this;
switch (_that) {
case _PaymentMethodDataCardFromMethod():
return $default(_that.paymentMethodId,_that.cvc,_that.billingDetails,_that.shippingDetails);case _:
  throw StateError('Unexpected subclass');

}
}