/**
     * Checks if the client is connected to OpenSearch.
     *
     * @return true if connected, false otherwise.
     */
    public boolean connected() {
        return connected;
    }

    /**
     * Connects to the OpenSearch cluster.
     * Creates a new client and waits for cluster health to be yellow or better.
     */
    public void connect() {
        destroy();

    /**
     * Returns the FesenClient instance, connecting if not already connected.
     * @return The FesenClient instance.
     */
    protected FesenClient getClient() {
        if (!fesenClient.connected()) {
            synchronized (fesenClient) {
                if (!fesenClient.connected()) {
                    fesenClient.connect();
                }
            }
        }
        return fesenClient;

     *
     * @param info The FTP information containing host, port, and other connection details
     * @return A configured FTP client ready for use
     * @throws IOException If the FTP client cannot be created or connected
     */
    protected FTPClient getClient(final FtpInfo info) throws IOException {
        FTPClient ftpClient = ftpClientQueue.poll();
        if (ftpClient != null) {
            if (ftpClient.isAvailable()) {

     */
    void init() throws IOException;

    /**
     * Converts the given text into a list of readings based on the specified field and languages.
     *
     * @param text the text to be converted.
     * @param field the field to be used for conversion.
     * @param langs the languages to be used for conversion.
     * @return a list of readings for the given text.

            FileUtil.deleteInBackground(inputFile);
            FileUtil.deleteInBackground(outputFile);
        }
    }

    /**
     * Gets the output content from the converted file.
     *
     * @param outputFile the converted output file
     * @param outExt the output file extension
     * @return the extracted text content
     * @throws ExtractException if an error occurs while reading the file
     */

     */
    public IdnDnsResolver() {
        super();
    }

    /**
     * Resolves the given host name to an array of IP addresses.
     * The host name is first converted to ASCII using IDN before resolution.
     *
     * @param host the host name to resolve
     * @return an array of IP addresses for the host
     * @throws UnknownHostException if the host name cannot be resolved
     */

        /**
         * Constructs a new StorageURLConnection for the specified URL.
         * This constructor parses the URL to extract bucket and object names.
         *
         * @param url The storage URL to connect to
         */
        protected StorageURLConnection(final URL url) {
            super(url);
            final String[] values = url.toExternalForm().split("/", 2);
            if (values.length == 2) {

     *
     * <p>This method iterates through the provided array of SuggestItem objects and merges
     * items that have the same ID. The merged items are added to a new list, which is then
     * converted back to an array and returned.</p>
     *
     * @param items an array of SuggestItem objects to be merged
     * @return an array of merged SuggestItem objects
     */

    /**
     * A map for URL conversion.
     */
    protected Map<String, String> convertMap = new LinkedHashMap<>();

    /**
     * Converts a URL.
     *
     * @param url The URL.
     * @return A converted URL.
     */
    public String convert(final String url) {
        if (url == null) {
            return null;
        }
        String convertedUrl = url;

 * It uses an Extractor to extract the text from the response body based on the MIME type.
 * The extracted text is then converted into a byte array using the specified charset encoding.
 * It also provides a method to retrieve the extracted data as a String from an AccessResultData object.
 *
 * <p>