map<TResult extends Object?> method

  1. @optionalTypeArgs
TResult map<TResult extends Object?>({
  1. required TResult premium(
    1. ChatBoostSourcePremium value
    ),
  2. required TResult giftCode(
    1. ChatBoostSourceGiftCode value
    ),
  3. required TResult giveaway(
    1. ChatBoostSourceGiveaway value
    ),
})

A switch-like method, using callbacks.

Callbacks receives the raw object, upcasted. It is equivalent to doing:

switch (sealedClass) {
  case final Subclass value:
    return ...;
  case final Subclass2 value:
    return ...;
}

Implementation

@optionalTypeArgs
TResult map<TResult extends Object?>({
  required TResult Function(ChatBoostSourcePremium value) premium,
  required TResult Function(ChatBoostSourceGiftCode value) giftCode,
  required TResult Function(ChatBoostSourceGiveaway value) giveaway,
}) {
  final _that = this;
  switch (_that) {
    case ChatBoostSourcePremium():
      return premium(_that);
    case ChatBoostSourceGiftCode():
      return giftCode(_that);
    case ChatBoostSourceGiveaway():
      return giveaway(_that);
  }
}