private async void SensorWatcher_Added(TemperatureSensorWatcher sender, AllJoynServiceInfo args)
        {
            TemperatureSensorJoinSessionResult joinResult = await TemperatureSensorConsumer.JoinSessionAsync(args, sender);

            if (joinResult.Status == AllJoynStatus.Ok)
            {
                // Use file system path api to extract object name from path
                var sensor = new TemperatureSensor(System.IO.Path.GetFileName(args.ObjectPath), joinResult.Consumer);
                sensor.SessionLost += Sensor_SessionLost;
                Sensors.Add(sensor);
            }
        }
        private void Sensor_SessionLost(object sender, EventArgs e)
        {
            TemperatureSensor sensor = (TemperatureSensor)sender;

            Sensors.Remove(sensor);
        }