* @param tf
     * @param domain
     * @param root
     * @param path
     * @param rootDr
     * @param now
     * @param links
     * @return
     * @throws SmbAuthException
     */
    private DfsReferralDataInternal getLinkReferral ( CIFSContext tf, String domain, String root, String path, DfsReferralDataInternal rootDr,
            long now, CacheEntry<DfsReferralDataInternal> links ) throws SmbAuthException {