<?xml version="1.0" encoding="UTF-8"?>
<sitemapindex xmlns="http://www.sitemaps.org/schemas/sitemap/0.9">
   <sitemap>
      <loc>http://www.example.com/sitemap1.xml.gz</loc>
      <lastmod>2004-10-01T18:23:17+00:00</lastmod>
   </sitemap>
   <sitemap>
      <loc>http://www.example.com/sitemap2.xml.gz</loc>
      <lastmod>2005-01-01</lastmod>
   </sitemap>

                return false;
            }

            final String preloadDate = new String(bytes, Constants.UTF_8);
            if (preloadDate.indexOf("<urlset") >= 0 || preloadDate.indexOf("<sitemapindex") >= 0 || preloadDate.startsWith("http://")
                    || preloadDate.startsWith("https://")) {
                // XML Sitemaps
                return true;
            }
            // gz