whenOrNull<TResult extends Object?> method

@optionalTypeArgs TResult? whenOrNull<TResult extends Object?>(TResult? $default(@JsonKey.new(name: 'method') String? cipher, String? password, int? level, String? email, List<ShadowsocksUserConfig>? users, List<ShadowsocksUserConfig>? clients, @JsonKey.new(name: 'network') XrayNetworkList? networkList,)?)

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(name: 'method') String? cipher,
          String? password,
          int? level,
          String? email,
          List<ShadowsocksUserConfig>? users,
          List<ShadowsocksUserConfig>? clients,
          @JsonKey(name: 'network') XrayNetworkList? networkList)?
      $default,
) {
  final _that = this;
  switch (_that) {
    case _ShadowsocksServerConfig() when $default != null:
      return $default(_that.cipher, _that.password, _that.level, _that.email,
          _that.users, _that.clients, _that.networkList);
    case _:
      return null;
  }
}