req = r;
            } else {
                if (!th.hasCapability(SmbConstants.CAP_NT_SMBS)) {
                    throw new SmbUnsupportedOperationException("Not supported without CAP_NT_SMBS");
                }

                /*
                 * NtTrans Notify Change Request / Response
                 */

        if (!this.smb2 || this.negotiated == null) {
            throw new SmbUnsupportedOperationException();
        }

        final Smb2NegotiateResponse resp = (Smb2NegotiateResponse) this.negotiated;
        if (!resp.getSelectedDialect().atLeast(DialectVersion.SMB311)) {
            throw new SmbUnsupportedOperationException();
        }

        MessageDigest dgst = switch (resp.getSelectedPreauthHash()) {

     */
    private void checkStatus() throws SmbException {
        final int status = this.response.getStatus();
        if (status == WinError.ERROR_SERVICE_NOT_INSTALLED) {
            throw new SmbUnsupportedOperationException();
        }
        if (status != WinError.ERROR_SUCCESS && status != WinError.ERROR_MORE_DATA) {
            throw new SmbException(status, true);
        }
    }

     * @param lastAccess
     *            the last access time as milliseconds since Jan 1, 1970
     * @throws CIFSException if an error occurs modifying the resource
     * @throws jcifs.smb.SmbUnsupportedOperationException
     *             if CAP_NT_SMBS is unavailable
     */
    void setFileTimes(long createTime, long lastModified, long lastAccess) throws CIFSException;

    /**

        }

        try (SmbTreeHandleImpl th = ensureTreeConnected()) {
            if (!th.isSMB2() && !th.hasCapability(SmbConstants.CAP_NT_SMBS)) {
                throw new SmbUnsupportedOperationException("Not supported without CAP_NT_SMBS");
            }
            return new SmbWatchHandleImpl(openUnshared(O_RDONLY, READ_CONTROL | GENERIC_READ, DEFAULT_SHARING, 0, 1), filter, recursive);
        }
    }

                    Set<ASN1ObjectIdentifier> mechs = new HashSet<>(Arrays.asList(tok.getMechanisms()));
                    if (!mechs.contains(NtlmContext.NTLMSSP_OID)) {
                        throw new SmbUnsupportedOperationException("Server does not support NTLM authentication");
                    }
                }
            }
        } catch (SmbException e) {
            throw e;
        } catch (IOException e1) {