// Should parse all entries and preserve lastmod values
        assertEquals(3, sitemaps.length);
        assertEquals("2025-1-1", sitemaps[0].getLastmod());
        assertEquals("01-01-2025", sitemaps[1].getLastmod());
        assertEquals("invalid-date", sitemaps[2].getLastmod());
    }

    public void test_parseXmlSitemaps_withoutNamespace() {
        // Sitemap without namespace declaration should still be parsed

            return false;
        }
        if (!isValidChangefreq(sitemapUrl.getChangefreq())) {
            return false;
        }
        if (!isValidDateFormat(sitemapUrl.getLastmod())) {
            return false;
        }
        return true;
    }