}

    /**
     * Returns an input stream from a deferred file output stream.
     *
     * @param dfos A deferred file output stream.
     * @return An input stream.
     * @throws IOException if an I/O error occurs.
     */
    protected InputStream getContentStream(final DeferredFileOutputStream dfos) throws IOException {
        if (dfos.isInMemory()) {
            return new ByteArrayInputStream(dfos.getData());
        }

            }
        }
    }

    /**
     * Closes the underlying CrawlerClient and releases any resources associated with it.
     *
     * @throws Exception if an error occurs during the close operation
     */
    @Override
    public void close() throws Exception {
        client.close();
    }

    /**
     * Returns the underlying CrawlerClient.

     * @param params extraction parameters
     * @return the extracted text data
     * @throws CrawlerSystemException if the input stream is null
     * @throws ExtractException if an error occurs during extraction
     * @throws MaxLengthExceededException if the extracted content size exceeds the maximum limit
     */
    @Override

     * If the response body is stored as a file, returns a FileInputStream.
     *
     * @return the response body as an InputStream, or null if no response body is available
     * @throws IORuntimeException if an I/O error occurs while reading the response body file
     */
    public InputStream getResponseBody() {
        if (responseBodyBytes != null) {
            return new ByteArrayInputStream(responseBodyBytes);
        }

- **Comprehensive Content Extraction**: Office documents, PDFs, archives, images, audio/video files
- **Multi-Threading**: Configurable thread pools for high-performance crawling
- **Fault Tolerance**: Built-in retry mechanisms and error handling
- **Flexible Configuration**: XML-based dependency injection with LastaFlute DI
- **Extensible Architecture**: Plugin system for custom extractors, transformers, and clients

            connectionMonitorTask.cancel();
        }
        if (httpClient != null) {
            try {
                httpClient.close();
            } catch (final IOException e) {
                logger.error("Failed to close httpClient.", e);
            }
            httpClient = null;
            if (clientConnectionManager != null) {
                clientConnectionManager.shutdown();
            }
        }

                            } else if (logger.isWarnEnabled()) {
                                logger.warn(msg);
                            } else if (logger.isErrorEnabled()) {
                                logger.error(msg);
                            }
                        }
                    } catch (final Exception e) {
                        logger.warn(e.getLocalizedMessage());
                    }

        return settingsIndexName + "_analyzer";
    }

    /**
     * Loads the index settings from a resource file.
     * @return The index settings as a string.
     * @throws IOException If an I/O error occurs.
     */
    protected String loadIndexSettings() throws IOException {
        final String dictionaryPath = System.getProperty("fess.dictionary.path", StringUtil.EMPTY);

     * @param docPerReq The number of documents to process per request.
     * @param requestInterval The interval between requests.
     * @return A Promise that will be resolved with the SuggestIndexResponse or rejected with an error.
     */
    public Deferred<SuggestIndexResponse>.Promise indexFromQueryLog(final QueryLogReader queryLogReader, final int docPerReq,
            final long requestInterval) {

        return tuples;
    }

    /**
     * Loads the index settings from a resource file.
     * @return The index settings as a string.
     * @throws IOException If an I/O error occurs.
     */
    protected String loadIndexSettings() throws IOException {
        final String dictionaryPath = System.getProperty("fess.dictionary.path", StringUtil.EMPTY);