return entry != null && entry.hasHandleCache();
    }
    return false;
}
```

### 6.3 Transport Layer Integration
```java
// In SmbTransport.java
private void handleIncomingMessage(ServerMessageBlock2 msg) {
    if (msg instanceof Smb2LeaseBreakNotification) {
        Smb2LeaseBreakNotification breakNotif = (Smb2LeaseBreakNotification) msg;
        
        // Get lease manager from session