*/
    @Override
    public byte[] getSessionKey () throws CIFSException {
        try ( SmbTreeHandleImpl th = ensureTreeConnected();
              SmbSessionImpl sess = th.getSession() ) {
            return sess.getSessionKey();
        }
    }


    /**
     * {@inheritDoc}
     *
     * @see jcifs.SmbPipeHandle#isStale()
     */
    @Override
    public boolean isStale () {