when<TResult extends Object?> method

  1. @optionalTypeArgs
TResult when<TResult extends Object?>(
  1. TResult $default(
    1. String paymentId,
    2. PaymentInfo? info,
    3. List<PaymentOption> options,
    4. CollectDataAction? collectData,
    )
)

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 paymentId,  PaymentInfo? info,  List<PaymentOption> options,  CollectDataAction? collectData)  $default,) {final _that = this;
switch (_that) {
case _PaymentOptionsResponse():
return $default(_that.paymentId,_that.info,_that.options,_that.collectData);}
}