*/
        public void setNotificationFuture(CompletableFuture<Void> future) {
            this.notificationFuture = future;
        }
    }

    /**
     * Create a new directory change notifier
     *
     * @param manager directory lease manager
     */
    public DirectoryChangeNotifier(DirectoryLeaseManager manager) {
        this.leaseManager = manager;

            public boolean isDirectory() { return fileInfo.isDirectory(); }
            // ... other attribute methods
        });
        
        return file;
    }
}
```

### 4.4 Directory Change Notifier
```java
package jcifs.internal.smb2.lease;

import jcifs.internal.smb2.ServerMessageBlock2;
import java.util.concurrent.ConcurrentHashMap;

public class DirectoryChangeNotifier {