*
 * Map<String, Object> document;
 * while ((document = reader.read()) != null) {
 *     // Process the document
 *     System.out.println(document);
 * }
 *
 * reader.close(); // Close the reader to release resources
 * }
 * </pre>
 */
public class ESSourceReader implements DocumentReader {
    private static final Logger logger = LogManager.getLogger(ESSourceReader.class);

    /** Queue of documents. */

    <magic priority="60">
      <match value="&lt;stata_dta>&lt;header>&lt;release>118&lt;/release>" type="string" offset="0"/>
    </magic>
  </mime-type>
  <mime-type type="application/x-stata-dta;version=13">
    <sub-class-of type="application/x-stata-dta"/>
    <magic priority="60">
      <match value="&lt;stata_dta>&lt;header>&lt;release>117&lt;/release>" type="string" offset="0"/>
    </magic>
  </mime-type>

 * ftpClient.init(); // Initialize with configured parameters
 * ResponseData responseData = ftpClient.doGet("ftp://example.com/path/to/file.txt");
 * // Process the responseData
 * ftpClient.close(); // Close and release resources
 * }
 * </pre>
 *
 * @author shinsuke
 */
public class FtpClient extends AbstractCrawlerClient {

    /** Logger instance for this class */