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function generateMobileOptimizedSitemap(urls) {const sitemap = xmlBuilder.create('urlset', { encoding: 'UTF-8' }).att('xmlns', 'http://www.sitemaps.org/schemas/sitemap/0.9');urls.forEach(url => {const urlNode = sitemap.ele('url');urlNode.ele('loc', `https://m.example.com${url}`);urlNode.ele('lastmod', new Date().toISOString().slice(0, 10)); urlNode.ele('changefreq', 'daily');urlNode.ele('priority', '0.8');});const xmlString = sitemap.end({ pretty: true });fs.writeFile('./public/mobile-sitemap.xml', xmlString, err => {if (err) {console.error('Error writing mobile sitemap:', err);} else {console.log('Mobile sitemap generated successfully');}});">