* Update the port in sitemaps files after the server has started.
     * This is needed when using port 0 (random port) because the actual port
     * is not known until the server starts.
     */
    public void updateSitemapsPort() {
        final int actualPort = getPort();
        try {
            // Update sitemaps.xml
            final File sitemapsXmlFile = new File(docRoot, "sitemaps.xml");
            if (sitemapsXmlFile.exists()) {

        }
    }

    @Test
    public void test_execute_xmlSitemaps() throws Exception {
        final CrawlerWebServer server = new CrawlerWebServer(0);
        server.start();
        server.updateSitemapsPort();

        final String url = "http://localhost:" + server.getPort() + "/";
        try {
            final int maxCount = 50;
            final int numOfThread = 10;