override def manifest()

in remote/src/main/scala/org/apache/pekko/remote/serialization/MiscMessageSerializer.scala [384:423]
39 lines of code
36 McCabe index (conditional complexity)

  override def manifest(o: AnyRef): String =
    o match {
      case _: Identify                                    => IdentifyManifest
      case _: ActorIdentity                               => ActorIdentityManifest
      case _: Option[Any]                                 => OptionManifest
      case _: Optional[_]                                 => OptionalManifest
      case _: ActorRef                                    => ActorRefManifest
      case _: Status.Success                              => StatusSuccessManifest
      case _: Status.Failure                              => StatusFailureManifest
      case StatusReply.Ack                                => StatusReplyAckManifest
      case StatusReply.Success(_)                         => StatusReplySuccessManifest
      case StatusReply.Error(_: StatusReply.ErrorMessage) => StatusReplyErrorMessageManifest
      case StatusReply.Error(_)                           => StatusReplyErrorExceptionManifest
      case _: ActorInitializationException                => ActorInitializationExceptionManifest
      case _: ThrowableNotSerializableException           => ThrowableNotSerializableExceptionManifest
      case _: Throwable                                   => ThrowableManifest
      case PoisonPill                                     => PoisonPillManifest
      case Kill                                           => KillManifest
      case RemoteWatcher.Heartbeat                        => RemoteWatcherHBManifest
      case Done                                           => DoneManifest
      case NotUsed                                        => NotUsedManifest
      case _: Address                                     => AddressManifest
      case _: UniqueAddress                               => UniqueAddressManifest
      case _: RemoteWatcher.HeartbeatRsp                  => RemoteWatcherHBRespManifest
      case LocalScope                                     => LocalScopeManifest
      case _: RemoteScope                                 => RemoteScopeManifest
      case _: Config                                      => ConfigManifest
      case _: FromConfig                                  => FromConfigManifest
      case _: DefaultResizer                              => DefaultResizerManifest
      case _: BalancingPool                               => BalancingPoolManifest
      case _: BroadcastPool                               => BroadcastPoolManifest
      case _: RandomPool                                  => RandomPoolManifest
      case _: RoundRobinPool                              => RoundRobinPoolManifest
      case _: ScatterGatherFirstCompletedPool             => ScatterGatherPoolManifest
      case _: TailChoppingPool                            => TailChoppingPoolManifest
      case _: RemoteRouterConfig                          => RemoteRouterConfigManifest

      case _ =>
        throw new IllegalArgumentException(s"Can't serialize object of type ${o.getClass} in [${getClass.getName}]")
    }