* code.
   *
   * <p><b>Performance note:</b> the instance returned is a singleton.
   */
  // Casting to any type is safe because the list will never hold any elements.
  @SuppressWarnings("unchecked")
  public static <E> ImmutableList<E> of() {
    return (ImmutableList<E>) EMPTY;
  }

  /**
   * Returns an immutable list containing a single element. This list behaves and performs

    List<Class<?>> interfaces = new ArrayList<>(Arrays.asList(forwarderClass.getInterfaces()));
    // Desugaring may introduce AutoCloseable as an extra interface.
    interfaces.remove(AutoCloseable.class);
    @SuppressWarnings("unchecked") // super interface type of T
    Class<? super T> interfaceType = (Class<? super T>) Iterables.getOnlyElement(interfaces);
    new ForwardingWrapperTester()
        .testForwarding(
            interfaceType,

     * @param key the key to look up in the document map
     * @param clazz the class type to convert the value to
     * @return the converted value or null if not found or conversion fails
     */
    @SuppressWarnings("unchecked")
    public static <T> T getValue(final Map<String, Object> doc, final String key, final Class<T> clazz) {
        if (doc == null || key == null) {
            return null;
        }

    JAPAN,
    SWITZERLAND,
    UK
  }

  @AndroidIncompatible // test-suite builders
  public static final class EnumHashBiMapGenerator implements TestBiMapGenerator<Country, String> {
    @SuppressWarnings("unchecked")
    @Override
    public BiMap<Country, String> create(Object... entries) {
      BiMap<Country, String> result = EnumHashBiMap.create(Country.class);
      for (Object o : entries) {

    private LogHelper logHelper;
    private CrawlerClientFactory clientFactory;
    private UrlFilter urlFilter;
    private RuleManager ruleManager;

    @Override
    @SuppressWarnings("unchecked")
    protected void setUp() throws Exception {
        super.setUp();

        crawlerThread = new CrawlerThread();
        crawlerContext = new CrawlerContext();
        crawlerContext.sessionId = "test-session";

                .execute()) {
            final Map<String, Object> contentMap = response.getContent(OpenSearchCurl.jsonParser());
            @SuppressWarnings("unchecked")
            final List<Map<String, Object>> fileList = (List<Map<String, Object>>) contentMap.get("file");
            return fileList.stream().map(fileMap -> {
                try {

    }

    @SuppressWarnings("unchecked")
    ImmutableList<ListenableFuture<T>> delegatesCast = (ImmutableList) delegates;
    return delegatesCast;
  }

  /** Can't use Iterables.toArray because it's not gwt compatible */
  @SuppressWarnings("unchecked")
  private static <T extends @Nullable Object> ListenableFuture<? extends T>[] gwtCompatibleToArray(

    public Set<Multiset.Entry<E>> create(Object... entries) {
      List<Object> contents = new ArrayList<>();
      Set<E> elements = new HashSet<>();
      for (Object o : entries) {
        @SuppressWarnings("unchecked")
        Multiset.Entry<E> entry = (Entry<E>) o;
        checkArgument(
            elements.add(entry.getElement()), "Duplicate keys not allowed in EntrySetGenerator");
        for (int i = 0; i < entry.getCount(); i++) {

   *
   * <p><b>Discouraged:</b> Prefer using a lambda like {@code v -> v}, which is shorter and often
   * more readable.
   */
  // implementation is "fully variant"; E has become a "pass-through" type
  @SuppressWarnings("unchecked")
  public static <E extends @Nullable Object> Function<E, E> identity() {
    return (Function<E, E>) IdentityFunction.INSTANCE;
  }

  // enum singleton pattern

    return Lists.newArrayList(iterable);
  }

  @Override
  public <E> ImmutableList<E> immutableSortedCopy(Iterable<E> iterable) {
    return ImmutableList.copyOf(iterable);
  }

  @SuppressWarnings("unchecked")
  @Override
  public <S extends @Nullable Object> Ordering<S> reverse() {
    return (Ordering<S>) this;
  }

  private Object readResolve() {
    return INSTANCE;
  }

  @Override