/// <summary>Notification that the list of sensors has changed</summary>
 internal static void OnSensorsChanged(Guid sensorId, SensorAvailabilityChange change)
 {
     if (SensorsChanged != null)
     {
         SensorsChanged.Invoke(new SensorsChangedEventArgs(sensorId, change));
     }
 }
 internal SensorsChangedEventArgs(Guid sensorId, SensorAvailabilityChange change)
 {
     SensorId = sensorId;
     Change   = change;
 }