locker = BasicLocation.createLocker(lockFile, null);
locker = BasicLocation.createLocker(lockFile, lockMode);
	private boolean lock() throws IOException {		if (locker == null)			locker = BasicLocation.createLocker(lockFile, null);		if (locker == null)			throw new IOException(EclipseAdaptorMsg.formatter.getString("fileManager.cannotLock")); //$NON-NLS-1$		return locker.lock();	}