assertNull(crawlerContext.getSessionId());

        crawlerContext.setSessionId("test-session-001");
        assertEquals("test-session-001", crawlerContext.getSessionId());

        crawlerContext.setSessionId(null);
        assertNull(crawlerContext.getSessionId());

        crawlerContext.setSessionId("");
        assertEquals("", crawlerContext.getSessionId());

        // Test with special characters

                if (sessionId.equals(urlQueue.getSessionId()) && url.equals(urlQueue.getUrl())) {
                    return true;
                }
            }
            for (final UrlQueue<String> urlQueue : waitingQueue) {
                if (sessionId.equals(urlQueue.getSessionId()) && url.equals(urlQueue.getUrl())) {
                    return true;
                }

                    uq.setSessionId(crawlerContext.getSessionId());
                    uq.setUrl(d.getUrl());
                    uq.setWeight(d.getWeight());
                    return uq;
                })
                .collect(Collectors.toList());

        if (!childList.isEmpty()) {
            CrawlingParameterUtil.getUrlQueueService().offerAll(crawlerContext.getSessionId(), childList);
        }
    }

    /**

            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());

            final Crawler crawler1 = crawlerContainer.getComponent("crawler");
            crawler1.setSessionId(crawler1.getSessionId() + "1");
            crawler1.setBackground(true);
            ((UrlFilterImpl) crawler1.urlFilter).setIncludeFilteringPattern("$1$2$3.*");
            crawler1.addUrl(url1);

            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());

            final Crawler crawler1 = container.getComponent("crawler");
            crawler1.setSessionId(crawler1.getSessionId() + "1");
            crawler1.setBackground(true);
            ((UrlFilterImpl) crawler1.urlFilter).setIncludeFilteringPattern("$1$2$3.*");
            crawler1.addUrl(url1);

        final String url = getUrl(target);
        if (url == null) {
            throw new OpenSearchAccessException("url is null.");
        }
        final String id = getId(getSessionId(target), url);
        try (final XContentBuilder source = getXContentBuilder(target)) {
            final IndexResponse response = getClient().get(c -> c.prepareIndex()
                    .setIndex(index)

        this.ruleId = ruleId;
    }

    /**
     * Gets the session ID associated with this crawling session.
     *
     * @return the session ID, or null if not specified
     */
    public String getSessionId() {
        return sessionId;
    }

    /**
     * Sets the session ID associated with this crawling session.
     *
     * @param sessionId the session ID to set
     */

        }
        urlFilter.processUrl(url);
    }

    /**
     * Returns the current session ID.
     * @return The session ID.
     */
    public String getSessionId() {
        return crawlerContext.sessionId;
    }

    /**
     * Sets the session ID.
     * If the new session ID is different from the current one, it updates the session ID in the URL queue service.