void initShield() async {
   ShieldCallback shieldCallback =
   ShieldCallback((Map<String, dynamic> result) {
     print("callback result: $result");
   }, (ShieldError error) {
     print("callback error: ${error.message}");
   });

   ShieldConfig config = ShieldConfig(
       siteID: "05500c2a429e0c873f3b8d42e1bee1f75f44ac8c",
       key: "a719e2620000000005500c2a429e0c873f3b8d42e1bee1f75f44ac8c",
       shieldCallback: shieldCallback,
       enableShieldProcess: true,
       logLevel: ShieldLogLevel.verbose);

   Shield.initShield(config);

   Shield.isShieldInitialized.then((value) => {
     print("Shield is initialized second call: $value"),
     if (value)
       {
         Shield.sessionId
             .then((value) => print("actual sessionID: $value"))

       }
   });
 }