final String filename = sanitizeFilename(new String(Base64.getDecoder().decode(id), StandardCharsets.UTF_8));
        final String logFilePath = systemHelper.getLogFilePath();
        if (StringUtil.isNotBlank(logFilePath) && isLogFilename(filename)) {
            final Path path = Paths.get(logFilePath, filename);
            return asStream(filename).contentTypeOctetStream().stream(out -> {

        if (StringUtil.isNotBlank(pager.queryId)) {
            cb.query().setQueryId_Term(pager.queryId);
        }
        if (StringUtil.isNotBlank(pager.userSessionId)) {
            cb.query().setUserSessionId_Term(pager.userSessionId);
        }
        if (StringUtil.isNotBlank(pager.accessType)) {
            cb.query().setAccessType_Term(pager.accessType);
        }

        final String username = fessConfig.getFesenUsername();
        final String password = fessConfig.getFesenPassword();
        if (StringUtil.isNotBlank(username) && StringUtil.isNotBlank(password)) {
            final String value = username + ":" + password;
            final String basicAuth = "Basic " + java.util.Base64.getEncoder().encodeToString(value.getBytes(StandardCharsets.UTF_8));

        this.bucket = bucket;

        final StorageOptions.Builder builder = StorageOptions.newBuilder();

        if (StringUtil.isNotBlank(projectId)) {
            builder.setProjectId(projectId);
        }

        if (StringUtil.isNotBlank(endpoint)) {
            // For fake-gcs-server or custom endpoint
            builder.setHost(endpoint);
            builder.setCredentials(NoCredentials.getInstance());

     *
     * @param msg the error message to add; ignored if null or blank
     */
    public static void addError(final String msg) {
        if (StringUtil.isNotBlank(msg)) {
            errors.offer(msg);
        }
    }

    /**
     * Command-line options container for the crawler application.
     * This class uses args4j annotations to define command-line arguments

        };
    }

    @Override
    public boolean isValid(final String value, final ConstraintValidatorContext context) {
        if (StringUtil.isNotBlank(value)) {
            return check(protocols, value);
        }
        return true;
    }

    /**
     * Checks if the given value matches any of the specified protocols.
     *

        if (StringUtil.isNotBlank(fileConfigPager.name)) {
            cb.query().setName_Wildcard(wrapQuery(fileConfigPager.name));
        }
        if (StringUtil.isNotBlank(fileConfigPager.paths)) {
            cb.query().setPaths_Wildcard(wrapQuery(fileConfigPager.paths));
        }
        if (StringUtil.isNotBlank(fileConfigPager.description)) {

            String userCode = (String) request.getAttribute(Constants.USER_CODE);
            if (StringUtil.isNotBlank(userCode)) {
                return userCode;
            }

            userCode = getUserCodeFromRequest(request);
            if (StringUtil.isNotBlank(userCode)) {
                return userCode;
            }

            if (!request.isRequestedSessionIdValid()) {

                boolean first2 = true;
                for (final Map.Entry<String, Object> entry : doc.entrySet()) {
                    final String name = entry.getKey();
                    if (StringUtil.isNotBlank(name) && entry.getValue() != null) {
                        if (!first2) {
                            buf.append(',');
                        } else {
                            first2 = false;

            final String accountFilter = fessConfig.getLdapAccountFilter();
            final String groupFilter = fessConfig.getLdapGroupFilter();
            if (StringUtil.isNotBlank(baseDn) && StringUtil.isNotBlank(accountFilter)) {
                final LdapManager ldapManager = ComponentUtil.getLdapManager();