/**
     * Calculates a MAC using the ARCFOUR-HMAC-MD5 algorithm.
     * This method implements the Microsoft variant of the Kerberos ARCFOUR-HMAC-MD5 checksum.
     *
     * @param keyusage the Kerberos key usage number for this operation
     * @param key the encryption key to use for MAC calculation
     * @param data the data to calculate the MAC for
     * @return the calculated MAC bytes

        } catch (final Exception e) {
            throw new FessSystemException("No crawling session.", e);
        }

    }

    /**
     * Calculates the document expiration date based on crawling configuration.
     * If the config has a timeToLive value, calculates expiration from current time.
     * Otherwise, returns the stored document expiration time.
     *

     * @return whether this mechanisms supports integrity
     */
    boolean supportsIntegrity();

    /**
     * Calculates a Message Integrity Code (MIC) for the given data.
     * @param data the data to calculate MIC for
     * @return MIC
     * @throws CIFSException if an error occurs calculating the MIC
     */
    byte[] calculateMIC(byte[] data) throws CIFSException;

     *            response message
     */
    void sign(byte[] data, int offset, int length, CommonServerMessageBlock request, CommonServerMessageBlock response);

    /**
     * Performs MAC signature verification. This calculates the signature
     * of the SMB and compares it to the signature field on the SMB itself.
     *
     * @param data
     *            The data.
     * @param offset

     */
    public void setMic(final byte[] mic) {
        this.mic = mic;
    }

    /**
     * Checks whether a message integrity code (MIC) should be calculated for this message.
     *
     * @return whether a MIC should be calculated
     */
    public boolean isMICRequired() {
        return this.micRequired;
    }

    @Override
    public byte[] toByteArray() throws IOException {

            inOrder.verify(mockCtx).dispose();

            // Also ensure no unexpected calls
            verifyNoMoreInteractions(mockCtx);
        }

        @Test
        @DisplayName("Never calculates MIC when integrity unsupported")
        void testNoMicCalculationWhenIntegrityUnsupported() throws Exception {
            // Only stub supportsIntegrity - isEstablished won't be called due to short-circuit

    }

    /**
     * Calculates the LMv2 response for NTLM authentication.
     *
     * @param type2 the Type-2 message containing the server challenge
     * @param domain the domain name
     * @param user the username
     * @param password the user's password
     * @param clientChallenge the client challenge bytes
     * @return the calculated LMv2 response
     */

                ex.printStackTrace(log);
            }
        } finally {
            signSequence += 2;
        }
    }

    /**
     * Performs MAC signature verification.  This calculates the signature
     * of the SMB and compares it to the signature field on the SMB itself.
     *
     * @param data The data.
     * @param offset The starting offset at which the SMB header begins.

            throw exception;
        }
    }

    /**
     * Calculates the limit document number based on total, percentage, and number.
     * @param total The total number of documents.
     * @param limitPercentage The limit percentage.
     * @param limitNumber The limit number.
     * @return The calculated limit document number.
     */

        this.container.setAttribute('data-termynal', '');
    }

    /**
     * Initialise the widget, get lines, clear container and start animation.
     */
    init() {
        /**
         * Calculates width and height of Termynal container.
         * If container is empty and lines are dynamically loaded, defaults to browser `auto` or CSS.
         */
        const containerStyle = getComputedStyle(this.container);