}
        return this.sessionKey;
    }

    @Override
    public SmbTreeImpl getSmbTree(String share, String service) {
        if (share == null) {
            share = "IPC$";
        }

        synchronized (this.trees) {
            for (SmbTreeImpl t : this.trees) {
                if (t.matches(share, service)) {
                    return t.acquire();
                }

        }

        try (SmbSessionImpl sess = getSmbSession(ctx, targetHost, targetDomain);
                SmbTransportImpl transport = sess.getTransport();
                SmbTreeImpl ipc = sess.getSmbTree("IPC$", null)) {

            final DfsReferralRequestBuffer dfsReq = new DfsReferralRequestBuffer(path, 3);
            DfsReferralResponseBuffer dfsResp;
            if (isSMB2()) {