//+ REGISTRATION internal static void RegisterActor(long actorID) => ACTOR_IDS.Add(actorID);
//+ HANDLING //+ SAVE HANDLING internal static bool IsActorRegistered(long actorID) => ACTOR_IDS.Contains(actorID);
//+ REGISTRATION internal static void RegisterActor(long actorID) => ACTOR_IDS.Add(actorID);
//+ HANDLING //+ SAVE HANDLING internal static bool IsActorRegistered(long actorID) => ACTOR_IDS.Contains(actorID);