configuration = new ServiceTracker(context, filter, null); configuration.open();
configTracker = new ServiceTracker(context, filter, new AppPersistence()); configTracker.open();
	private static void initConfiguration() {		closeConfiguration(); // just incase		Filter filter = null;		try {			filter = context.createFilter(FILTER_PREFIX + PROP_CONFIG_AREA + "))"); //$NON-NLS-1$		} catch (InvalidSyntaxException e) {			// ignore this.  It should never happen as we have tested the above format.		}		configuration = new ServiceTracker(context, filter, null);		configuration.open();	}