String[] retrieved = data.getValues("empty");
        assertNotNull(retrieved);
        assertEquals(0, retrieved.length);
    }

    public void test_nullValues() {
        // Test with null values
        ExtractData data = new ExtractData();

        data.putValue("key", null);

        String[] retrieved = data.getValues("key");
        assertNotNull(retrieved);

public interface AccessResultData<IDTYPE> {

    /**
     * Retrieves the unique identifier of the access result data.
     *
     * @return the unique identifier of type IDTYPE.
     */
    IDTYPE getId();

    /**
     * Sets the ID of the access result data.
     *
     * @param id the ID to set
     */
    void setId(IDTYPE id);

    /**
     * Retrieves the name of the transformer associated with this access result data.

        Directive retrieved = robotsTxt.getDirective("OtherBot");
        assertNull(retrieved);
    }

    public void test_getDirectiveWithNull() {
        // Test getDirective with null user agent
        RobotsTxt robotsTxt = new RobotsTxt();

        Directive retrieved = robotsTxt.getDirective(null);
        assertNull(retrieved);
    }

 *   <li>{@code done} - Flag indicating whether the file has been retrieved.</li>
 * </ul>
 *
 * <p>Constructors:</p>
 * <ul>
 *   <li>{@code ContentOutputStream(int threshold, File tmpDir)} - Constructs a ContentOutputStream with a specified threshold and temporary directory.</li>
 * </ul>
 *
 * <p>Methods:</p>
 * <ul>
 *   <li>{@code getFile()} - Marks the file as retrieved and returns the file.</li>

    private static final ThreadLocal<DataService<AccessResult<?>>> DATA_SERVICE_THREAD_LOCAL = new ThreadLocal<>();

    private CrawlingParameterUtil() {
    }

    /**
     * Retrieves the current thread's {@link UrlQueue} instance.
     *
     * @return the {@link UrlQueue} instance associated with the current thread, or {@code null} if none is set.
     */
    public static UrlQueue<?> getUrlQueue() {

     * Configuration settings for Fess application.
     * Contains various configuration parameters used throughout the application.
     */
    @Resource
    protected FessConfig fessConfig;

    /**
     * Retrieves a paginated list of related content entities.
     *
     * @param relatedContentPager the pager object containing pagination and search parameters
     * @return a list of RelatedContent entities matching the specified criteria

    @Resource
    protected UserBhv userBhv;

    /**
     * Default constructor for GroupService.
     */
    public GroupService() {
        // Default constructor
    }

    /**
     * Retrieves a paginated list of groups based on the provided pager criteria.
     * Updates the pager with pagination information including page numbers and ranges.
     *

    @Resource
    protected FessConfig fessConfig;

    /**
     * Constructs a new stopwords service.
     */
    public StopwordsService() {
        // do nothing
    }

    /**
     * Retrieves a list of stopwords for a given dictionary and pager.
     *
     * @param dictId         The ID of the dictionary.
     * @param stopwordsPager The pager for controlling pagination.
     * @return A list of stopwords.

    @Resource
    protected FessConfig fessConfig;

    /**
     * Constructs a new synonym service.
     */
    public SynonymService() {
        // do nothing
    }

    /**
     * Retrieves a list of synonyms for a given dictionary and pager.
     *
     * @param dictId       The ID of the dictionary.
     * @param synonymPager The pager for controlling pagination.
     * @return A list of synonyms.
     */

 */
public interface Sitemap extends Serializable {

    /**
     * Retrieves the location (URL) of the sitemap.
     *
     * @return the location of the sitemap as a String.
     */
    String getLoc();

    /**
     * Retrieves the last modification date of the sitemap.
     *
     * @return A string representing the last modification date.
     */