*/
    public static class Options {

        /** Session ID for the crawling session. If not provided, a timestamp-based ID will be generated. */
        @Option(name = "-s", aliases = "--sessionId", metaVar = "sessionId", usage = "Session ID")
        public String sessionId;

        /** Name for the crawling session for identification purposes. */

    }

    /**
     * @return this session's UID
     */
    public int getUid() {
        return this.uid;
    }

    /**
     * @return this session's expiration time
     */
    public Long getExpiration() {
        return this.expiration > 0 ? this.expiration : null;
    }

    /**
     * @return this session's credentials
     */

                return;
            }
            final String sessionId = initParamMap.getAsString(Constants.SESSION_ID);
            if (StringUtil.isBlank(sessionId)) {
                logger.warn("[{}] Cannot delete stale documents: sessionId is not set.", dataConfig.getName());
                return;
            }

        crawler.crawlerContext.setNumOfThread(5);
        crawler.urlFilter.addInclude("https://example.com/.*");
        
        // Execute crawling
        String sessionId = crawler.execute();
        System.out.println("Crawling completed. Session ID: " + sessionId);
    }
}
```

### File System Crawling

```java
import org.codelibs.fess.crawler.client.fs.FileSystemClient;

// Configure for file system crawling

        // Generate unique session ID for key management
        this.sessionId = String.format("smb-enc-%d-%d", System.currentTimeMillis(), secureRandom.nextLong());

        if (keyManager != null) {
            // Store keys securely
            String encKeyId = sessionId + "-enc";
            String decKeyId = sessionId + "-dec";

        assertNull(result.getId());
    }

    public void test_sessionIdGetterSetter() {
        // Test session ID getter/setter
        AccessResultImpl<Long> result = new AccessResultImpl<>();

        String sessionId = "session123";
        result.setSessionId(sessionId);
        assertEquals(sessionId, result.getSessionId());
    }

    public void test_ruleIdGetterSetter() {
        // Test rule ID getter/setter

     * Removes URL filters, URL queues, and access result data for the session.
     *
     * @param sessionId the session ID whose data should be deleted
     */
    private void deleteBySessionId(final String sessionId) {
        try {
            urlFilterService.delete(sessionId);
        } catch (final Exception e) {
            logger.warn("Failed to delete UrlFilter: sessionId={}", sessionId, e);

    }

    public void test_add() {
        // Setup
        String sessionId = "session123";
        String url = "https://example.com/page";
        Queue<UrlQueueImpl<Long>> mockQueue = new LinkedList<>();

        when(dataHelper.getUrlQueueList(sessionId)).thenReturn(mockQueue);

        // Execute
        service.add(sessionId, url);

        // Verify
        assertEquals(1, mockQueue.size());

     *
     * @param sessionId The session ID.
     */
    @Override
    public void delete(final String sessionId) {
        deleteBySessionId(sessionId);
    }

    /**
     * Offers multiple URL queue entries for the specified session.
     * Only URLs that don't already exist will be added.
     *
     * @param sessionId The session ID.

     *
     * @param sessionId The session ID.
     * @param url The URL.
     */
    void add(String sessionId, String url);

    /**
     * Inserts a URL queue.
     *
     * @param urlQueue The URL queue.
     */
    void insert(QUEUE urlQueue);

    /**
     * Deletes a URL queue.
     *
     * @param sessionId The session ID.
     */
    void delete(String sessionId);

    /**