this.stateLock = stateLock;
        this.initAction = initAction;
        this.onOpen = onOpen;
        this.onClose = onClose;
        unlocker = new UnlockAction();
        whenContended = new ContendedAction();
    }

    @Override
    public void open() {
        // Don't need to do anything
    }

    @Override
    public void close() {
        stateLock.lock();
        try {