*
     * @param key the metadata key
     * @return the values associated with the key, or null if not found
     */
    public String[] getValues(final String key) {
        return metadata.get(key);
    }

    /**
     * Gets the set of all metadata keys.
     *
     * @return the set of metadata keys
     */
    public Set<String> getKeySet() {
        return metadata.keySet();
    }

    /**

    }

    /**
     * Gets the URL of the crawled resource.
     *
     * @return the URL
     */
    public String getUrl() {
        return url;
    }

    /**
     * Sets the URL of the crawled resource.
     *
     * @param url the URL to set
     */
    public void setUrl(final String url) {
        this.url = url;
    }

    /**

        if (field == null) {
            return null;
        }
        if (clazz.equals(Integer.class)) {
            final Number value = (Number) field;
            return (T) Integer.valueOf(value.intValue());
        }
        if (clazz.equals(Long.class)) {
            final Number value = (Number) field;
            return (T) Long.valueOf(value.longValue());
        }
        return (T) field;

    @Override
    public float getWeight() {
        return weight;
    }

    @Override
    public void setWeight(float weight) {
        this.weight = weight;
    }

    /**
     * Returns a string representation of this object.
     * @return A string representation.
     */
    @Override
    public String toString() {

            return new String(FileUtil.readBytes(outputFile), Constants.UTF_8_CHARSET);
        }
    }

    /**
     * Gets the extractor for the specified file extension.
     *
     * @param ext the file extension
     * @return the extractor for the extension, or null if not found
     */
    private Extractor getExtractor(final String ext) {
        return extractorMap.get(ext);
    }

    /**

        if (extractors == null || extractors.length == 0) {
            return null;
        }
        if (extractors.length == 1) {
            return extractors[0];
        }
        return new Extractor() {
            @Override
            public ExtractData getText(final InputStream in, final Map<String, String> params) {
                for (final Extractor extractor : extractors) {
                    try {

     *
     * @return the unique identifier of type IDTYPE.
     */
    IDTYPE getId();

    /**
     * Sets the unique identifier for the URL queue.
     *
     * @param id the unique identifier to set
     */
    void setId(IDTYPE id);

    /**
     * Retrieves the session ID associated with this URL queue.
     *
     * @return the session ID as a String.
     */

    /**
     * Gets the URL for this request.
     * @return the URL
     */
    public String getUrl() {
        return url;
    }

    /**
     * Sets the URL for this request.
     * @param url the URL
     */
    public void setUrl(final String url) {
        this.url = url;
    }

    /**
     * Gets the weight/priority of this request.
     * @return the weight
     */
    public float getWeight() {

     */
    private String url;

    /**
     * Returns the ID.
     * @return The ID.
     */
    public String getId() {
        return id;
    }

    /**
     * Sets the ID.
     * @param id The ID.
     */
    public void setId(final String id) {
        this.id = id;
    }

    /**
     * Returns the session ID.
     * @return The session ID.
     */
    public String getSessionId() {

            return false;
        }
        try {
            Charset.forName(charsetName);
        } catch (final Exception e) {
            return false;
        }
        return true;
    }

    /**
     * Loads and detects the character set from the input stream.
     *
     * @param inputStream the input stream to read from