this.scheduler = Executors.newScheduledThreadPool(1);
        this.changeNotifier = new DirectoryChangeNotifier(this);

        // Schedule periodic cache cleanup
        scheduler.scheduleAtFixedRate(this::cleanupExpiredEntries, 60, 60, TimeUnit.SECONDS);
    }

    /**
     * Request a directory lease
     *
     * @param directoryPath directory path
     * @param requestedState requested lease state

        this.changeNotifier = new DirectoryChangeNotifier(this);
        
        // Schedule periodic cache cleanup
        scheduler.scheduleAtFixedRate(this::cleanupExpiredEntries, 60, 60, TimeUnit.SECONDS);
    }
    
    public Smb2LeaseKey requestDirectoryLease(String directoryPath, 
                                             int requestedState,