&& isValidCanonicalUrl(responseData.getUrl(), canonicalUrl)) {
            final Set<RequestData> childUrlSet = new HashSet<>();
            childUrlSet.add(RequestDataBuilder.newRequestData().get().url(canonicalUrl).build());
            logger.info("CANONICAL: {} -> {}", responseData.getUrl(), canonicalUrl);

            logger.debug("[{}] Crawling Access Exception at {}", failureUrlId, urlQueue.getUrl(), cae);
        } else if (cae.isInfoEnabled()) {
            logger.info("[{}] {}", failureUrlId, cae.getMessage());
        } else if (cae.isWarnEnabled()) {
            logger.warn("[{}] Crawling Access Exception at {}", failureUrlId, urlQueue.getUrl(), cae);
        } else if (cae.isErrorEnabled()) {

                    }
                    break;
                default:
                    logger.error("Unknown thumbnail result: {} -> {}", thumbnailId, responseData.getUrl());
                    break;
                }
            } catch (final Throwable t) {
                logger.warn("Failed to create thumbnail: {} -> {} ({}:{})", thumbnailId, responseData.getUrl(),

                    appendJson("user-info-id", entity.getUserInfoId(), buf).append(',');
                    appendJson("doc-id", entity.getDocId(), buf).append(',');
                    appendJson("url", entity.getUrl(), buf);
                    buf.append('}');
                    buf.append('\n');
                    try {
                        writer.write(buf.toString());
                    } catch (final IOException e) {

                    if (logger.isDebugEnabled()) {
                        logger.debug("Skipping crawl request for url='{}' at depth={} (maxDepth={}, alreadyProcessed={})",
                                crawlRequest.getUrl(), crawlRequest.getDepth(), maxDepth, processedUrls.contains(crawlRequest.getUrl()));
                    }
                    continue;

                    }
                }

            });
        } catch (final Exception e) {
            final CrawlingAccessException rcae = new CrawlingAccessException("Could not get a text from " + responseData.getUrl(), e);
            rcae.setLogLevel(CrawlingAccessException.WARN);
            throw rcae;
        }
        if (content == null) {
            content = StringUtil.EMPTY;
        }

     * @return the URL string or a default value if not extractable
     */
    protected String getUrl(final Object keyObj) {
        if (keyObj instanceof final UrlQueue<?> urlQueue) {
            return escapeValue(urlQueue.getUrl());
        }
        if (keyObj instanceof final StatsKeyObject statsKey) {
            return escapeValue(statsKey.getUrl());
        }
        if (keyObj instanceof final String key) {

     */
    public String getMessageCode() {
        return messageCode;
    }

    /**
     * Returns the array of arguments.
     *
     * @return Array of arguments
     */
    public Object[] getArgs() {
        return args;
    }

  assertEquals("/v1/chat/messages/", request1.getUrl().encodedPath());
  assertNotNull(request1.getHeaders().get("Authorization"));

  RecordedRequest request2 = server.takeRequest();
  assertEquals("/v1/chat/messages/2", request2.getUrl().encodedPath());

  RecordedRequest request3 = server.takeRequest();
  assertEquals("/v1/chat/messages/3", request3.getUrl().encodedPath());

        urlList = fessXpathTransformer.convertChildUrlList(urlList);
        assertEquals(2, urlList.size());
        assertEquals("http://www.example.com", urlList.get(0).getUrl());
        assertEquals("http://www.test.com", urlList.get(1).getUrl());

        urlList.clear();
        urlList.add(RequestDataBuilder.newRequestData().get().url("feed://www.example.com").build());