when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. Element sepaDebit,
    2. SepaBillingDetails? billingDetails
    ), {
  2. required TResult id(
    1. String id
    ),
  3. required TResult withIban(
    1. SepaDebitIbanData sepaDebit,
    2. SepaBillingDetails? billingDetails
    ),
})

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(@JsonKey(name: "sepa_debit")@ElementConverter()  Element sepaDebit, @JsonKey(name: "billing_details")  SepaBillingDetails? billingDetails)  $default,{required TResult Function( String id)  id,required TResult Function(@JsonKey(name: "sepa_debit")  SepaDebitIbanData sepaDebit, @JsonKey(name: "billing_details")  SepaBillingDetails? billingDetails)  withIban,}) {final _that = this;
switch (_that) {
case _IdSepaDebitPaymentMethodDetails():
return id(_that.id);case _SepaDebitPaymentMethodDetailsElement():
return $default(_that.sepaDebit,_that.billingDetails);case _SepaDebitPaymentMethodDetailsWithIban():
return withIban(_that.sepaDebit,_that.billingDetails);}
}