chromium/third_party/blink/web_tests/http/tests/inspector-protocol/prefetch/resources/prefetch.https.html

<!DOCTYPE html>
<html>
<script>
  let params = new URLSearchParams(location.search);
  let prefetchUrl = params.get('url') ?? 'prefetch.https.html?page=2';
  let script = document.createElement('script');
  script.type = 'speculationrules';
  script.textContent = JSON.stringify({ prefetch: [{ source: "list", urls: [prefetchUrl] }] });
  document.head.appendChild(script);
</script>
<body> This is a test page for prefetch! </body>
</html>