when<TResult extends Object?> method

@optionalTypeArgs TResult when<TResult extends Object?>(TResult $default(int? mtu, int? tti, @JsonKey.new(name: 'uplinkCapacity') int? upCap, @JsonKey.new(name: 'downlinkCapacity') int? downCap, int? cwndMultiplier, int? maxSendingWindow, Map<String, dynamic>? header, String? seed,))

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(
          int? mtu,
          int? tti,
          @JsonKey(name: 'uplinkCapacity') int? upCap,
          @JsonKey(name: 'downlinkCapacity') int? downCap,
          int? cwndMultiplier,
          int? maxSendingWindow,
          Map<String, dynamic>? header,
          String? seed)
      $default,
) {
  final _that = this;
  switch (_that) {
    case _KCPConfig():
      return $default(
          _that.mtu,
          _that.tti,
          _that.upCap,
          _that.downCap,
          _that.cwndMultiplier,
          _that.maxSendingWindow,
          _that.header,
          _that.seed);
    case _:
      throw StateError('Unexpected subclass');
  }
}