Pass ContextWrapper to java by modifiying notification example for Android

[walterAlex]

Hello I'm trying to modify the notification sample provided with QT ( at \QT5.4.1\Examples\Qt-5.4\androidextras\notification ) in order to use application's ContextWrapper object.
Here's an example of a code I have as reference ( no QT just a fragment of a pure java app).

public class DemoApplication extends Application {

public void onCreate() {
    super.onCreate();

    GUIHelper.init(this); //  decalred as public static void init(ContextWrapper context)
    
}

}

Now I need to do same thing but calling GUIHelper.init from inside of \QT5.4.1\Examples\Qt-5.4\androidextras\notification\android-sources\src\org\qtproject\example\notification\NotificationClient.java:

public class NotificationClient extends org.qtproject.qt5.android.bindings.QtActivity
{

private static NotificationManager m_notificationManager;
private static Notification.Builder m_builder;
private static NotificationClient m_instance;
private static EyeVerify _eyeverifier = null;


public NotificationClient()
{
    m_instance = this;
	
	
}    

public static void notify(String s) {

	// pass ContextWrapper here
	GUIHelper.init( ??? );

            ...

}

}

As notify method is invoked from the c++ side I don't know where to obtain the ContextWrapper ( or Application ) instance to pass to GUIHelper.init.

Any help will be appreciated
Thanks in advance
Walter