NotificationService service = NotificationService.GetCurrent("YOUR_PUSHWOOSH_APP_ID", "AUTH_SERVICE_NAME_OR_NULL", null);
service.OnPushTokenReceived += (sender, pushToken) => {
//code to handle push token
service.OnPushTokenFailed += (sender, error) => {
//code to handle push subscription failure
service.OnPushAccepted += (sender, pushNotification) => {
//code to handle push notification
service.SubscribeToPushService();