public static FSMBase.State <TS, TD> ReplyingParent <TS, TD>(this FSMBase.State <TS, TD> state, object msg) => state.Replying(msg, ExposedReceiveActor.ExposedContext.Parent);
public static FSMBase.State <TS, TD> ReplyingSelf <TS, TD>(this FSMBase.State <TS, TD> state, object msg) => state.Replying(msg, ObservableActor.ExposedContext.Self);