init method
init this in your main.dart
await FlutterCanPassLogin.getInstance().init(
Implementation
// secret: your_secret,
// identifier: client_id);
/// ```
Future<void> init({String? identifier, String? secret}) async {
await Utils.getInstance().init();
this._identifier = identifier;
this._secret = secret;
_accessToken = Utils.getInstance().getAccessTokenFromCache();
}