postcard.setDataCrawlStartTime(getValueFromMap(dataMap, "dataCrawlStartTime", StringUtil.EMPTY));
                    postcard.setDataIndexSize(getValueFromMap(dataMap, "dataIndexSize", "0"));
                    postcard.setDataIndexExecTime(getValueFromMap(dataMap, "dataIndexExecTime", "0"));

            dataMap.put(fessConfig.getIndexFieldLabel(), newLabelSet.toArray(new String[newLabelSet.size()]));
        }

        if (!dataMap.containsKey(fessConfig.getIndexFieldDocId())) {
            dataMap.put(fessConfig.getIndexFieldDocId(), systemHelper.generateDocId(dataMap));
        }

        ComponentUtil.getLanguageHelper().updateDocument(dataMap);

        synchronized (docList) {

     *
     * @param dataMap the original data map to merge into
     * @param responseDataMap the response data map from the crawler
     */
    protected void mergeResponseData(final Map<String, Object> dataMap, final Map<String, Object> responseDataMap) {
        dataMap.putAll(responseDataMap);
        dataMap.keySet()
                .stream()

            dataMap.put(key, value);
        } else {
            final Object oldValue = dataMap.get(key);
            final Object[] oldValues;
            if (oldValue instanceof Object[]) {
                oldValues = (Object[]) oldValue;
            } else if (oldValue instanceof Collection<?>) {

     *
     * @param responseData the response data from crawling
     * @param dataMap the data map containing extracted field values
     */
    protected void normalizeData(final ResponseData responseData, final Map<String, Object> dataMap) {
        final Object titleObj = dataMap.get(fessConfig.getIndexFieldTitle());
        if (titleObj != null) {
            dataMap.put(fessConfig.getIndexFieldTitle(),

                // text cache
                putResultDataBody(dataMap, fessConfig.getIndexFieldCache(), cache);
                putResultDataBody(dataMap, fessConfig.getIndexFieldHasCache(), Constants.TRUE);
            }
        }
        // digest
        putResultDataBody(dataMap, fessConfig.getIndexFieldDigest(),
                documentHelper.getDigest(responseData, bodyBase, dataMap, fessConfig.getCrawlerDocumentFileMaxDigestLengthAsInteger()));

        accessResultData.setEncoding("UTF-8");

        Map<String, Object> dataMap = XmlUtil.getDataMap(accessResultData);
        assertNotNull(dataMap);
        assertEquals(3, dataMap.size());
        assertEquals("Test Title", dataMap.get("title"));
        assertEquals("Test Content", dataMap.get("content"));
        assertEquals("Test Author", dataMap.get("author"));
    }

    }

    private static class DocHandler extends DefaultHandler {
        private final Map<String, Object> dataMap = new HashMap<>();

        private String fieldName;

        private final StringBuilder buffer = new StringBuilder(1000);

        @Override
        public void startDocument() {
            dataMap.clear();
        }

        @Override

        ResponseData responseData = new ResponseData();
        byte[] content = "<sitemap></sitemap>".getBytes();
        responseData.setResponseBody(content);

        SitemapUrl sitemap = new SitemapUrl();
        sitemap.setLoc("https://example.com/page1");

        SitemapSet sitemapSet = new SitemapSet();
        sitemapSet.addSitemap(sitemap);

        when(crawlerContainer.getComponent("sitemapsHelper")).thenReturn(sitemapsHelper);

/**
 * Represents a URL entry within a sitemap.
 *
 * <p>
 * This class encapsulates the properties of a URL as defined in the sitemap XML format,
 * including its location, last modification date, change frequency, and priority.
 * It also supports sitemap extensions such as images, videos, news, and alternate links.
 * It implements the {@link Sitemap} interface.
 * </p>
 *
 * <p>