whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(String? user, String originChainId, String originCurrency, String destinationChainId, String destinationCurrency, String recipient, String amount,)?)

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(@JsonKey(includeIfNull: false)  String? user,  String originChainId,  String originCurrency,  String destinationChainId,  String destinationCurrency,  String recipient,  String amount)?  $default,) {final _that = this;
switch (_that) {
case _GetTransfersQuoteParams() when $default != null:
return $default(_that.user,_that.originChainId,_that.originCurrency,_that.destinationChainId,_that.destinationCurrency,_that.recipient,_that.amount);case _:
  return null;

}
}