* Retrieves related content for a given search query.
     * First checks for exact term matches, then evaluates regex patterns.
     * For regex matches, the query placeholder is replaced with the actual query.
     *
     * @param query the search query to find related content for
     * @return array of related content strings, or empty array if no matches found
     */
    public String[] getRelatedContents(final String query) {

  }

  private static final class JdkMatcher extends CommonMatcher {
    final Matcher matcher;

    JdkMatcher(Matcher matcher) {
      this.matcher = Preconditions.checkNotNull(matcher);
    }

    @Override
    public boolean matches() {
      return matcher.matches();
    }

    @Override
    public boolean find() {
      return matcher.find();
    }

    @Override
    public boolean find(int index) {

     * Returns a filter for directories that may contain paths accepted by the given matcher.
     * The given path matcher should be an instance created by this service.
     * The path matcher returned by this method expects directory paths.
     * If that matcher returns {@code false}, then the directory will definitively not contain
     * the paths selected by the matcher given in argument to this method.

        Matcher matcher = LINK_PATTERN.matcher(link);
        if (!matcher.matches()) {
            return null;
        }

        String className = null;
        if (matcher.group(1).length() > 0) {
            className = typeNameResolver.resolve(matcher.group(1), classMetaData);
            if (className == null) {
                return null;

    super.setUp();
    bus = new EventBus(BUS_IDENTIFIER);
  }

  public void testBasicCatcherDistribution() {
    StringCatcher catcher = new StringCatcher();
    bus.register(catcher);
    bus.post(EVENT);

    List<String> events = catcher.getEvents();
    assertEquals("Only one event should be delivered.", 1, events.size());

    super.setUp();
    bus = new EventBus(BUS_IDENTIFIER);
  }

  public void testBasicCatcherDistribution() {
    StringCatcher catcher = new StringCatcher();
    bus.register(catcher);
    bus.post(EVENT);

    List<String> events = catcher.getEvents();
    assertEquals("Only one event should be delivered.", 1, events.size());

        scriptType = ComponentUtil.getFessConfig().getCrawlerDefaultScript();
    }

    /**
     * Determines if the given document data matches the configured match expression.
     *
     * @param map the document data as a map of field names to values
     * @return true if the document matches the expression, false otherwise
     */
    public boolean match(final Map<String, Object> map) {

            // extract the revision number from the version with a regex matcher
            Matcher matcher = LUCENE_SNAPSHOT_REGEX.matcher(luceneVersion);
            if (matcher.find() == false) {
                throw new GradleException("Malformed lucene snapshot version: " + luceneVersion);
            }
            String revision = matcher.group(1);
            MavenArtifactRepository luceneRepo = repos.maven(repo -> {

    }

    /**
     * Creates a path matcher function for path mapping.
     *
     * @param matcher the regex matcher
     * @param replacement the replacement string
     * @return the path matcher function
     */
    public BiFunction<String, Matcher, String> createPathMatcher(final Matcher matcher, final String replacement) { // for PathMapping

        final Pattern pattern = Pattern.compile("test");
        final Matcher matcher = pattern.matcher("test");
        final BiFunction<String, Matcher, String> pathMatcher = pathMappingHelper.createPathMatcher(matcher, "function:encodeUrl");

        String result = pathMatcher.apply("http://example.com/test path", matcher);
        assertEquals("http://example.com/test+path", result);
    }

    @Test