@Nonnull
    @Override
    MessageBuilder append(char c);

    /**
     * Append content to the message buffer.
     *
     * @param value the content to append
     * @param offset the index of the first {@code char} to append
     * @param len the number of {@code char}s to append
     * @return the current builder
     */
    @Nonnull
    default MessageBuilder a(char[] value, int offset, int len) {

        /**
         * Create file info from name and attributes
         *
         * @param name file name
         * @param size file size
         * @param lastModified last modified time
         * @param isDirectory true if directory
         * @param attributes file attributes
         * @param creationTime creation time
         * @param lastAccessTime last access time
         */

        return !isEmpty(text);
    }

    /**
     * Replaces all occurrences of a substring within a string with another string.
     *
     * @param text
     *            The original string.
     * @param fromText
     *            The substring to be replaced.
     * @param toText
     *            The replacement substring.
     * @return The resulting string after replacements.
     */

     *
     * @param level the severity level of the message
     * @param message the message to be logged
     */
    default void log(@Nonnull Level level, @Nonnull String message) {
        log(level, message, null);
    }

    /**
     * Logs a message at the specified level with an associated exception.
     *
     * @param level the severity level of the message

    /**
     * Returns the resource from the specified class loader. Returns <code>null</code> if not found.
     *
     * @param path
     *            The resource path. Must not be {@literal null} or empty string.
     * @param extension
     *            The resource extension.
     * @param loader
     *            The class loader to search for the resource. Must not be {@literal null}.
     * @return The resource {@link URL}

     *
     * @param dataMap the data map to populate
     * @param responseData the response data from crawling
     * @param fessConfig the Fess configuration
     * @param crawlingConfig the crawling configuration
     * @param documentHelper the document helper for content processing
     * @param body the extracted body content
     * @param fileName the file name if applicable
     */

    public abstract ByteBuffer receive(int timeout) throws IOException;

    /**
     * Perform RDMA read operation
     *
     * @param localRegion local memory region to read into
     * @param remoteAddress remote memory address
     * @param remoteKey remote memory key
     * @param length number of bytes to read
     * @throws IOException if read fails
     */

            }, () -> asListHtml(dictId));
        }
    }

    /**
     * Validate the protected word string.
     * @param action The action.
     * @param values The values.
     * @param propertyName The property name.
     * @param hook The error hook.
     */
    private static void validateProtwordsString(final FessBaseAction action, final String values, final String propertyName,

        }

        DcerpcException de = msg.getResult();
        if (de != null) {
            throw de;
        }
    }

    /**
     * @param msg
     * @param out
     * @param buf
     * @param off
     * @param tot
     * @return
     * @throws IOException
     */
    private int sendFragments(final DcerpcMessage msg, final byte[] out, final NdrBuffer buf) throws IOException {

    private static final Base64.Encoder encoder = Base64.getEncoder();

    /**
     * Constructor.
     * @param settings Suggest settings
     * @param client OpenSearch client
     * @param settingsIndexName Settings index name
     * @param settingsId Settings ID
     */