protected byte[] engineDigest() {
        final byte[] digest = md5.digest();
        md5.update(opad);
        return md5.digest(digest);
    }

    @Override
    protected int engineDigest(final byte[] buf, final int offset, final int len) {
        final byte[] digest = md5.digest();
        md5.update(opad);
        md5.update(digest);
        try {
            return md5.digest(buf, offset, len);

        final byte[] digest = this.md5.digest();
        this.md5.update(this.opad);
        return this.md5.digest(digest);
    }

    @Override
    protected int engineDigest(final byte[] buf, final int offset, final int len) {
        final byte[] digest = this.md5.digest();
        this.md5.update(this.opad);
        this.md5.update(digest);
        try {
            return this.md5.digest(buf, offset, len);

        // nothing

        return appendQueryParameter(document, url);
    }

    /**
     * Updates file protocol based on user agent type.
     * Handles different browser-specific file protocol formats.
     *
     * @param url the file URL to update
     * @return the updated URL with appropriate file protocol
     */
    protected String updateFileProtocol(String url) {

        final byte[] response = new byte[24];
        MessageDigest hmac = Crypto.getHMACT64(passwordHash);
        hmac.update(Strings.getUNIBytes(user.toUpperCase()));
        hmac.update(Strings.getUNIBytes(domain.toUpperCase()));
        hmac = Crypto.getHMACT64(hmac.digest());
        hmac.update(challenge);
        hmac.update(clientChallenge);
        hmac.digest(response, 0, 16);
        System.arraycopy(clientChallenge, 0, response, 16, 8);

        mac.init(key);
        byte[] dk = mac.doFinal(MD5_CONSTANT);
        try {
            // little endian
            md.update((byte) (ms_usage & 0xFF));
            md.update((byte) (ms_usage >> 8 & 0xFF));
            md.update((byte) (ms_usage >> 16 & 0xFF));
            md.update((byte) (ms_usage >> 24 & 0xFF));
            byte[] dgst = md.digest(data);
            mac.reset();

            assertEquals(4, SMBUtil.readInt2(buffer, 2));
            assertEquals(24 + (24 * 4), bytesWritten);
        }

        @Test
        @DisplayName("Should handle file ID updates")
        void testFileIdUpdates() {
            // Initial file ID
            byte[] initialFileId = new byte[16];
            Arrays.fill(initialFileId, (byte) 0x11);
            request.setFileId(initialFileId);

        // Verify that createNextIndex completed without exceptions
        // The update alias should now point to the new index
        final String updateAlias = suggester.getIndex() + ".update";
        aliasResponse = client.admin().indices().prepareGetAliases(updateAlias).execute().actionGet();
        assertNotNull("Update alias should exist after createNextIndex", aliasResponse.getAliases());

        // Switch to new index

    }

    @Test
    @DisplayName("Test partial update")
    void testPartialUpdate() {
        SMB1SigningDigest digest = new SMB1SigningDigest(testMacSigningKey);
        byte[] data = new byte[] { 0x01, 0x02, 0x03, 0x04, 0x05, 0x06, 0x07, 0x08 };

        // Update with partial data
        digest.update(data, 2, 4); // Only update with bytes at index 2-5
        byte[] result = digest.digest();

        // maxParameterCount, maxDataCount, and maxSetupCount are protected fields
        // Their values are verified through the wire format methods
    }

    @Test
    void testReset() {
        // Test reset method updates resumeKey and filename
        trans2FindNext2 = new Trans2FindNext2(config, TEST_SID, TEST_RESUME_KEY, TEST_FILENAME, TEST_BATCH_COUNT, TEST_BATCH_SIZE);

        int newResumeKey = 0x5678;

        entity.asDocMeta().indexOption(opLambda);
        doInsert(entity, null);
    }

    public void update(ClickLog entity) {
        doUpdate(entity, null);
    }

    public void update(ClickLog entity, RequestOptionCall<IndexRequestBuilder> opLambda) {
        entity.asDocMeta().indexOption(opLambda);
        doUpdate(entity, null);
    }