final String sessionId = crawler.getSessionId();

        // Add some test data
        crawler.addUrl("http://example.com/");

        // Perform cleanup - should not throw exception
        crawler.cleanup(sessionId);
    }

    public void test_stop() throws Exception {
        final CrawlerWebServer server = new CrawlerWebServer(7070);
        server.start();

        try {

        this.leaseToPath = new ConcurrentHashMap<>();
        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

  - [Changelog since v1.33.5](#changelog-since-v1335)
  - [Changes by Kind](#changes-by-kind-1)
    - [Feature](#feature-1)
    - [Bug or Regression](#bug-or-regression-1)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-1)
    - [Added](#added-1)
    - [Changed](#changed-1)
    - [Removed](#removed-1)
- [v1.33.5](#v1335)
  - [Downloads for v1.33.5](#downloads-for-v1335)

  - [Changelog since v1.27.11](#changelog-since-v12711)
  - [Changes by Kind](#changes-by-kind-4)
    - [Feature](#feature-3)
    - [Bug or Regression](#bug-or-regression-4)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-4)
    - [Added](#added-4)
    - [Changed](#changed-4)
    - [Removed](#removed-4)
- [v1.27.11](#v12711)
  - [Downloads for v1.27.11](#downloads-for-v12711)

            log.error("Failed to create handle state directory: " + stateDirectory, e);
        }

        // Load persisted handles on startup
        loadPersistedHandles();

        // Schedule periodic persistence and cleanup
        scheduler.scheduleAtFixedRate(this::periodicMaintenance, 30, 30, TimeUnit.SECONDS);
    }

    /**
     * Request a new durable handle
     * @param path the file path
     * @param type the handle type

        Smb2LeaseKey key = leaseManager.requestLease(path, requestedState);
        assertNotNull(leaseManager.getLease(key));

        // Wait a bit and then cleanup with a very short expiration time
        Thread.sleep(10);
        int cleaned = leaseManager.cleanupExpiredLeases(1); // 1ms expiration

        assertEquals(1, cleaned);
        assertNull(leaseManager.getLease(key));

        assertFalse(it.hasNext(), "Iterator should be empty when server reports no such file");

        // FindClose2 is sent during cleanup
        verify(tree, times(1)).send(isA(SmbComFindClose2.class), any());
        verify(tree, atLeastOnce()).release();
    }

    @ParameterizedTest
    @ValueSource(strings = { "", " ", "*", "?" })

    - [Node Binaries](#node-binaries)
    - [Container Images](#container-images)
  - [Changelog since v1.29.14](#changelog-since-v12914)
  - [Changes by Kind](#changes-by-kind)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies)
    - [Added](#added)
    - [Changed](#changed)
    - [Removed](#removed)
- [v1.29.14](#v12914)
  - [Downloads for v1.29.14](#downloads-for-v12914)

  - [Changelog since v1.20.11](#changelog-since-v12011)
  - [Changes by Kind](#changes-by-kind-3)
    - [API Change](#api-change)
    - [Bug or Regression](#bug-or-regression-3)
    - [Other (Cleanup or Flake)](#other-cleanup-or-flake)
  - [Dependencies](#dependencies-3)
    - [Added](#added-3)
    - [Changed](#changed-3)
    - [Removed](#removed-3)
- [v1.20.11](#v12011)
  - [Downloads for v1.20.11](#downloads-for-v12011)

     */
    public HtmlTagBasedGenerator() {
        super();
    }

    /**
     * Destroys this thumbnail generator and releases any resources.
     * This implementation is empty as no cleanup is required.
     */
    @Override
    public void destroy() {
    }

    /**
     * Creates a thumbnail generation task for the specified document.
     *