* The class provides methods to interrupt the thread and stop the timeout target.
 *
 * <p>
 * The class uses a logger to log debug messages.
 * It also uses an AtomicBoolean to track whether the thread is running.
 * </p>
 *
 * <p>
 * The expired method is called when a timeout occurs.
 * It interrupts the running thread up to a maximum number of times.

 * </ul>
 *
 * <p>Passwords are matched against URLs or resource names using regular expression patterns.
 * The extractor first tries to match against the URL, then falls back to the resource name if available.
 *
 * @author shinsuke
 */
public abstract class PasswordBasedExtractor extends AbstractExtractor {

    /** Logger instance for this class. */

 *
 * <p>
 * The class handles character encoding issues by attempting to use the specified charset.
 * If the specified charset is invalid, it falls back to UTF-8.
 * </p>
 *
 * <p>
 * The class also provides methods to set and get the charset name used for encoding and decoding the text content.
 * </p>
 *
 * <p>

    protected String charset = Constants.UTF_8;

    /** Helper for managing content length limits */
    @Resource
    protected ContentLengthHelper contentLengthHelper;

    /** Flag to track initialization status */
    protected AtomicBoolean isInit = new AtomicBoolean(false);

    /**
     * Constructs a new FileSystemClient.
     */
    public FileSystemClient() {
        // Default constructor

    </magic>
    <magic priority="40">
      <match value="0xFF575043" type="big32" offset="0"/> <!-- ÿWPC -->
    </magic>
    <!-- If magic for the different versions doesn't work, fall back to glob -->
    <glob pattern="*.wpd"/>
    <glob pattern="*.wp"/>
    <glob pattern="*.wp5"/>
    <glob pattern="*.wp6"/>
    <glob pattern="*.w60"/>
    <glob pattern="*.wp61"/>