log.log(device, log.LOG_DEBUG, this + " constructor");
log.log(device, LogService.LOG_DEBUG, this + " constructor");
	public DeviceTracker(Activator manager, ServiceReference device) {		super(manager.context, device, null);		this.manager = manager;		log = manager.log;		if (Activator.DEBUG) {			log.log(device, log.LOG_DEBUG, this + " constructor"); //$NON-NLS-1$		}		open();	}