final String url = urlQueue.getUrl();
        if (StringUtil.isBlank(url)) {
            if (logger.isDebugEnabled()) {
                logger.debug("URL is a blank: {}", url);
            }
            return false;
        }

        // check it in queue
        for (final UrlQueue<Long> urlInQueue : urlQueueList) {

        this.relatedContentMap = relatedContentMap;
        return relatedContentMap.size();
    }

    /**
     * Extracts the virtual host key from a RelatedContent entity.
     * If the virtual host is blank or null, returns an empty string.
     * This key is used to organize related content by virtual host.
     *
     * @param entity the RelatedContent entity to extract the host key from

        assertEquals("", basePath);

        basePath = virtualHostHelper.getVirtualHostBasePath("  ", new HtmlNext("/test"));
        assertEquals("", basePath); // StringUtil.isBlank considers whitespace as blank
    }

    public void test_getVirtualHostKey() {
        ComponentUtil.setFessConfig(new FessConfig.SimpleImpl() {
            private static final long serialVersionUID = 1L;

            @Override

     *
     * @param key       The key associated with the extractor. Must not be null or blank.
     * @param extractor The extractor to add. Must not be null.
     */
    public void addExtractor(final String key, final Extractor extractor) {
        if (StringUtil.isBlank(key)) {
            throw new CrawlerSystemException("The key is null.");
        }
        if (extractor == null) {

     * Handles user authentication setup and database persistence.
     * If the surname is blank, it will be set to the user's name.
     *
     * @param user the user entity to store
     */
    public void store(final User user) {
        if (StringUtil.isBlank(user.getSurname())) {
            user.setSurname(user.getName());
        }

     * @param defaultValue the default value to return if key is not found or value is blank
     * @return the value from the map or the default value
     */
    private String getValueFromMap(final Map<String, String> dataMap, final String key, final String defaultValue) {
        final String value = dataMap.get(key);
        if (StringUtil.isBlank(value)) {
            return defaultValue;
        }
        return value;
    }

     * @param content the content to add line numbers to
     * @return the content with line numbers prepended, or empty string if content is blank
     */
    public String appendLineNumber(final String prefix, final String content) {
        if (StringUtil.isBlank(content)) {
            return StringUtil.EMPTY;
        }
        final String[] values = content.split("\n");

            final String region = System.getenv().get("STORAGE_SECRET_KEY");
            try {
                if (StringUtil.isBlank(endpoint)) {
                    throw new IOException("endpoint is blank.");
                }
                final Builder builder = MinioClient.builder().endpoint(endpoint);

    /**
     * Encodes a string for similar document hash processing.
     *
     * @param input the string to encode
     * @return encoded string, or the original input if blank
     */
    public static String sdh(final String input) {
        if (StringUtil.isBlank(input)) {
            return input;
        }
        return ComponentUtil.getDocumentHelper().encodeSimilarDocHash(input);
    }

    /**

    public static String key(String groupId, String artifactId, String version) {
        notBlank(groupId, "groupId can neither be null, empty nor blank");
        notBlank(artifactId, "artifactId can neither be null, empty nor blank");
        notBlank(version, "version can neither be null, empty nor blank");

        return groupId + ":" + artifactId + ":" + version;
    }

    private static void notBlank(String str, String message) {