log.log(reference, log.LOG_WARNING, DeviceMsg.Device_service_unregistered);
log.log(reference, LogService.LOG_WARNING, DeviceMsg.Device_service_unregistered);
	public void removedService(ServiceReference reference, Object service) {		if (running) {			log.log(reference, log.LOG_WARNING, DeviceMsg.Device_service_unregistered);			running = false; /* request algorithm to stop */		} else {			if (Activator.DEBUG) {				log.log(reference, log.LOG_DEBUG, this + " removing Device service"); //$NON-NLS-1$			}		}	}