internal abstract void ForwardNotification(Growl.Connector.Notification notification, Growl.Daemon.CallbackInfo callbackInfo, Growl.Daemon.RequestInfo requestInfo, bool isIdle, Forwarder.ForwardedNotificationCallbackHandler callbackFunction);
 internal abstract void ForwardRegistration(Growl.Connector.Application application, List <Growl.Connector.NotificationType> notificationTypes, Growl.Daemon.RequestInfo requestInfo, bool isIdle);