public IActorDispatch GetDispatcher(ProcessId pid) =>
pid.IsValid
? pid.IsSelection
? new ActorDispatchGroup(pid.GetSelection(), Settings.TransactionalIO)
: IsDisp(pid)
? GetPluginDispatcher(pid)
: IsLocal(pid)
? GetLocalDispatcher(pid)
: GetRemoteDispatcher(pid)
: new ActorDispatchNotExist(pid);