crawler.setBackground(true);
            ((UrlFilterImpl) crawler.urlFilter).setIncludeFilteringPattern("$1$2$3.*");
            crawler.addUrl(url);
            crawler.getCrawlerContext().setMaxAccessCount(maxCount);
            crawler.getCrawlerContext().setNumOfThread(numOfThread);
            final String sessionId = crawler.execute();

            // Wait for crawler to start running with polling

        testCrawler.setNumOfThread(5);
        assertEquals(5, testCrawler.getCrawlerContext().getNumOfThread());

        testCrawler.setMaxThreadCheckCount(15);
        assertEquals(15, testCrawler.getCrawlerContext().getMaxThreadCheckCount());

        testCrawler.setMaxDepth(10);
        assertEquals(10, testCrawler.getCrawlerContext().getMaxDepth());

        testCrawler.setMaxAccessCount(100);

        assertNull(CrawlingParameterUtil.getCrawlerContext());

        // Create and set a CrawlerContext
        CrawlerContext context = new CrawlerContext();
        context.setSessionId("test-context-session");

        CrawlingParameterUtil.setCrawlerContext(context);

        // Verify it can be retrieved
        CrawlerContext retrieved = CrawlingParameterUtil.getCrawlerContext();
        assertNotNull(retrieved);

            file.mkdirs();
            file.deleteOnExit();
            fileTransformer.setPath(file.getAbsolutePath());
            crawler.addUrl(url);
            crawler.getCrawlerContext().setMaxAccessCount(maxCount);
            crawler.getCrawlerContext().setNumOfThread(numOfThread);
            crawler.urlFilter.addInclude(url + ".*");
            final String sessionId = crawler.execute();

                    if (crawlerList.get(i).getCrawlerContext().getStatus() == CrawlerStatus.DONE
                            && Constants.RUNNING.equals(crawlerStatusList.get(i))) {
                        crawlerList.get(i).awaitTermination();
                        crawlerStatusList.set(i, Constants.DONE);
                        final String sid = crawlerList.get(i).getCrawlerContext().getSessionId();

 * <p>Usage example:</p>
 * <pre>
 * {@code
 * UrlQueue<?> urlQueue = CrawlingParameterUtil.getUrlQueue();
 * CrawlingParameterUtil.setUrlQueue(newUrlQueue);
 *
 * CrawlerContext context = CrawlingParameterUtil.getCrawlerContext();
 * CrawlingParameterUtil.setCrawlerContext(newContext);
 *
 * UrlQueueService<UrlQueue<?>> urlQueueService = CrawlingParameterUtil.getUrlQueueService();
 * CrawlingParameterUtil.setUrlQueueService(newUrlQueueService);

```java
// Set (in CrawlerThread)
CrawlingParameterUtil.setCrawlerContext(context);
CrawlingParameterUtil.setUrlQueue(urlQueue);

// Get (anywhere in same thread)
CrawlerContext ctx = CrawlingParameterUtil.getCrawlerContext();

// Clear (ALWAYS in finally)
CrawlingParameterUtil.clearAll();
```

## Log Message Guidelines

- Format parameters as `key=value` (e.g., `sessionId={}`, `url={}`)

     */
    protected void processResult(final UrlQueue<?> urlQueue, final ResponseData responseData, final ResultData resultData) {
        final CrawlerContext crawlerContext = CrawlingParameterUtil.getCrawlerContext();
        final UrlQueueService<UrlQueue<?>> urlQueueService = CrawlingParameterUtil.getUrlQueueService();
        if (!urlQueueService.visited(urlQueue)) {
            if (checkAccessCount(crawlerContext)) {

        }
    }

    /**
     * Returns the crawler context.
     * @return The CrawlerContext instance.
     */
    public CrawlerContext getCrawlerContext() {
        return crawlerContext;
    }

    /**
     * Sets the number of threads.
     * @param numOfThread The number of threads.
     */
    public void setNumOfThread(final int numOfThread) {

            // not support robots.txt
            return;
        }

        // crawler context
        final CrawlerContext crawlerContext = CrawlingParameterUtil.getCrawlerContext();
        if (crawlerContext == null) {
            // wrong state
            return;
        }

        final int idx = url.indexOf('/', url.indexOf("://") + 3);
        String hostUrl;