private static final Logger log = LoggerFactory.getLogger(AbstractCIFSContext.class);
    private boolean closed;


    /**
     * 
     */
    public AbstractCIFSContext () {
        Runtime.getRuntime().addShutdownHook(this);
    }


    /**
     * @param creds
     * @return a wrapped context with the given credentials
     */
    @Override
    public CIFSContext withCredentials ( Credentials creds ) {