Open add contact page on Android in Flutter?

How can I use the contacts_services plugin or existing code to open the system’s default Add Contact page?

void openAddContacts() async{
if (Platform.isAndroid) {
  final AndroidIntent intent = AndroidIntent(
    action: 'ContactsContract.Intents.Insert.ACTION',
    category: 'ContactsContract.RawContacts.CONTENT_TYPE',
  );
  await intent.launch();
 }
}

The code provided is already one way to open the system’s default Add Contact page using the contacts_services plugin and platform-specific code for Android.