static long attrExpirationPeriod;
    static boolean ignoreCopyToException;

    static {

        try {
            Class.forName("jcifs.smb1.Config");
        } catch (final ClassNotFoundException cnfe) {
            logger.error("Failed to load jcifs.smb1.Config class", cnfe);
        }
        attrExpirationPeriod = Config.getLong("jcifs.smb1.smb.client.attrExpirationPeriod", DEFAULT_ATTR_EXPIRATION_PERIOD);