*
     * @param key       The key associated with the extractor. Must not be null or blank.
     * @param extractor The extractor to add. Must not be null.
     */
    public void addExtractor(final String key, final Extractor extractor) {
        if (StringUtil.isBlank(key)) {
            throw new CrawlerSystemException("Extractor key (MIME type) is null or blank. Cannot register extractor without a valid key.");

    private static final Pattern ID_REGEX = Pattern.compile(ID);

    private static final String ILLEGAL_REPO_ID_CHARS = "\\/:\"<>|?*"; // ILLEGAL_FS_CHARS

    @Override
    public void validate(Settings settings, SettingsProblemCollector problems) {
        if (settings.isUsePluginRegistry()) {
            addViolation(problems, Severity.WARNING, "usePluginRegistry", null, "is deprecated and has no effect.");

   * <p>When selecting an executor, note that {@code directExecutor} is dangerous in some cases. See
   * the discussion in the {@link ListenableFuture#addListener ListenableFuture.addListener}
   * documentation.
   */
  public void add(Runnable runnable, Executor executor) {
    // Fail fast on a null. We throw NPE here because the contract of Executor states that it throws
    // NPE on null listener, so we propagate that contract up into the add method as well.

     */
    public void setProcessDestroyTimeout(final int processDestroyTimeout) {
        this.processDestroyTimeout = processDestroyTimeout;
    }

    /**
     * Sets the timeout for stream closing operations.
     *
     * @param streamCloseTimeout timeout in seconds for stream closing operations
     */
    public void setStreamCloseTimeout(final int streamCloseTimeout) {

     */
    private void setFieldValue(Object bean, Field field, Object value) throws IllegalAccessException {
        if (!field.canAccess(bean)) {
            field.setAccessible(true);
        }
        field.set(bean, value);
    }

    /**
     * Clear all caches. Useful for testing or memory management.
     */
    public static void clearCaches() {
        METHOD_CACHE.clear();

    }

    @Override
    public void addSourceRoot(@Nonnull Project project, @Nonnull SourceRoot source) {
        MavenProject prj = getMavenProject(requireNonNull(project, "project" + " cannot be null"));
        prj.addSourceRoot(requireNonNull(source, "source" + " cannot be null"));
    }

    @Override
    public void addSourceRoot(
            @Nonnull Project project,

     */
    public void setConvertUrlMap(final Map<String, String> convertUrlMap) {
        this.convertUrlMap.putAll(convertUrlMap);
    }

    /**
     * Adds a URL conversion rule.
     *
     * @param regex the regular expression pattern to match
     * @param replacement the replacement string
     */
    public void addConvertUrl(final String regex, final String replacement) {

class GroovyClassWithFullyQualifiedNames extends org.gradle.test.sub.SubGroovyClass implements org.gradle.test.sub.SubJavaInterface, java.lang.Runnable {
    org.gradle.test.sub.SubJavaInterface getProp() {
        this
    }

    void run() {
    }

     * {@inheritDoc}
     *
     * @throws CIFSException
     *
     * @see java.lang.AutoCloseable#close()
     */
    @Override
    public void close() throws CIFSException {
        this.delegate.close();
    }

    @Override
    public void remove() {
        this.delegate.remove();
    }

// @Ignore affects the Android test runner, which respects JUnit 4 annotations on JUnit 3 tests.
@SuppressWarnings("JUnit4ClassUsedInJUnit3")
public class SetHashCodeTester<E> extends AbstractSetTester<E> {
  public void testHashCode() {
    int expectedHashCode = 0;
    for (E element : getSampleElements()) {
      expectedHashCode += (element == null) ? 0 : element.hashCode();
    }
    assertEquals(