public function __construct($clientId, $clientSecret, $authResource)
 {
     parent::__construct($clientId, $authResource);
     $this->clientSecret = $clientSecret;
 }
 public function __construct($clientId)
 {
     $authResource = 'https://www.googleapis.com/oauth2/v2/tokeninfo';
     parent::__construct($clientId, $authResource);
 }