void main() async {
    const String url = 'https://pub.dev/';
    final OgpData? ogpData = await OgpDataExtract.execute(url);
    print(ogpData?.url); // https://pub.dev/
    print(ogpData?.type); // website
    print(ogpData?.title); // Dart packages
    print(ogpData?.description); // Pub is the package manager for the Dart programming language, containing reusable libraries & packages for Flutter, AngularDart, and general Dart programs.
    print(ogpData?.image); // https://pub.dev/static/img/pub-dev-icon-cover-image.png?hash=vg86r2r3mbs62hiv4ldop0ife5um2g5g
    print(ogpData?.siteName); // Dart packages
}

void main() async {
    const String url = 'https://pub.dev/';
    const String userAgent = 'Mozilla/5.0 (iPhone; CPU iPhone OS 12_0 like Mac OS X) AppleWebKit/605.1.15 (KHTML, like Gecko) Version/12.0 Mobile/15E148 Safari/604.1';
    final OgpData? ogpData = await OgpDataExtract.execute(url, userAgent: userAgent);
    print(ogpData);
}

void main() async {
    const String url = 'https://pub.dev/';
    final http.Response response = await http.get(Uri.parse(url));
    final Document? document = OgpDataExtract.toDocument(response);
    final OgpData ogpData = OgpDataParser(document).parse();
    print(ogpData);
}