final CachedCipher cipher = new CachedCipher();
        cipher.setKey("mySecretKey");

        final String original = "";
        final String encrypted = cipher.encryptText(original);
        final String decrypted = cipher.decryptText(encrypted);

        assertThat(decrypted, is(original));
    }

    @Test
    public void testLongText() {
        final CachedCipher cipher = new CachedCipher();

     */
    protected long deleteOldDocuments(final SearchEngineClient searchEngineClient, final DocList docList) {
        final FessConfig fessConfig = ComponentUtil.getFessConfig();

        final List<String> docIdList = new ArrayList<>();
        for (final Map<String, Object> inputDoc : docList) {
            final Object idValue = inputDoc.get(fessConfig.getIndexFieldId());

    protected String replaceHighlightQueries(final String cache, final String[] queries) {
        final StringBuffer buf = new StringBuffer(cache.length() + 100);
        final StringBuffer segBuf = new StringBuffer(1000);
        final Pattern p = Pattern.compile("<[^>]+>");
        final Matcher m = p.matcher(cache);
        final String[] regexQueries = new String[queries.length];
        final String[] hlQueries = new String[queries.length];

    //                                                                  ==================
    protected void handleSizeLimitExceededException(final HttpServletRequest request, final FileUploadByteCountLimitException e) {
        final long actual = e.getActualSize();
        final long permitted = e.getPermitted();
        final String msg = "Exceeded size of the multipart request: actual=" + actual + " permitted=" + permitted;

     * @return an array of role names
     */
    public String[] getRoles(final LdapUser ldapUser, final String bindDn, final String accountFilter, final String groupFilter,
            final Consumer<String[]> lazyLoading) {
        final SystemHelper systemHelper = ComponentUtil.getSystemHelper();
        final Set<String> roleSet = new HashSet<>();

        if (fessConfig.isLdapRoleSearchUserEnabled()) {

        private static final String IMAGE_LOC_ELEMENT = "image:loc";

        private static final String IMAGE_CAPTION_ELEMENT = "image:caption";

        private static final String IMAGE_GEO_LOCATION_ELEMENT = "image:geo_location";

        private static final String IMAGE_TITLE_ELEMENT = "image:title";

        private static final String IMAGE_LICENSE_ELEMENT = "image:license";

        this(config, controlCode, Smb2Constants.UNSPECIFIED_FILEID);
    }

    /**
     * Constructs an SMB2 IOCTL request with a specified file ID
     * @param config the client configuration
     * @param controlCode the IOCTL control code
     * @param fileId the file identifier
     */

     * @param sh
     * @param req
     * @param resp
     * @throws SmbException
     */
    static void copyDir(final SmbFile src, final SmbFile dest, final byte[][] b, final int bsize, final WriterThread w,
            final SmbTreeHandleImpl sh, final SmbTreeHandleImpl dh) throws CIFSException {
        final String path = dest.getLocator().getUNCPath();
        if (path.length() > 1) {
            try {
                dest.mkdir();

     * @return A set of roles.
     */
    public Set<String> build(final SearchRequestType searchRequestType) {
        final Set<String> roleSet = new HashSet<>();
        final HttpServletRequest request = LaRequestUtil.getOptionalRequest().orElse(null);
        final FessConfig fessConfig = ComponentUtil.getFessConfig();
        final boolean isApiRequest =

    }

    static byte[] readSecurityBuffer(final byte[] src, final int index) {
        final int length = readUShort(src, index);
        final int offset = readULong(src, index + 4);
        final byte[] buffer = new byte[length];
        System.arraycopy(src, offset, buffer, 0, length);
        return buffer;
    }

    static void writeULong(final byte[] dest, final int offset, final int ulong) {