public void testAsMap() {
    CacheBuilder<Object, Object> builder = createCacheBuilder();
    LocalLoadingCache<Object, Object> cache = makeCache(builder, identityLoader());
    assertThat(cache.stats()).isEqualTo(EMPTY_STATS);

    Object one = new Object();
    Object two = new Object();
    Object three = new Object();

    ConcurrentMap<Object, Object> map = cache.asMap();
    assertThat(map.put(one, two)).isNull();

            "components": {
                "schemas": {
                    "UserOut": {
                        "title": "UserOut",
                        "required": ["username", "email"],
                        "type": "object",
                        "properties": {
                            "username": {"title": "Username", "type": "string"},
                            "email": {
                                "title": "Email",

        if (str == null) {
            return null;
        }
        return new String[] { str };
    }

    protected LocalDateTime toLocalDateTime(Object value) {
        return DfTypeUtil.toLocalDateTime(value);
    }

    protected Date toDate(Object value) {
        return DfTypeUtil.toDate(value);
    }

    protected SearchHits getSearchHits(final SearchResponse response) {

                "schemas": {
                    "PlaneItem": {
                        "title": "PlaneItem",
                        "required": ["description", "size"],
                        "type": "object",
                        "properties": {
                            "description": {"title": "Description", "type": "string"},
                            "type": {
                                "title": "Type",

public final class CollectorTester<
    T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object> {
  /**
   * Creates a {@code CollectorTester} for the specified {@code Collector}. The result of the {@code
   * Collector} will be compared to the expected value using {@link Object#equals}.
   */
  public static <T extends @Nullable Object, A extends @Nullable Object, R extends @Nullable Object>

  /** Test proper handling where an object incorrectly tests for an incompatible class */
  public void testInvalidEqualsIncompatibleClass() {
    Object obj = new InvalidEqualsIncompatibleClassObject();
    equalsTester.addEqualityGroup(obj);
    try {
      equalsTester.testEquals();
    } catch (AssertionFailedError e) {
      assertErrorMessage(
          e, obj + " must not be Object#equals to an arbitrary object of another class");

        final List<String> docIdList = new ArrayList<>();
        for (final Map<String, Object> inputDoc : docList) {
            final Object idValue = inputDoc.get(fessConfig.getIndexFieldId());
            if (idValue == null) {
                continue;
            }

            final Object configIdValue = inputDoc.get(fessConfig.getIndexFieldConfigId());
            if (configIdValue == null) {

        return false;
    }

    @Override
    public void trace(String msg) {}

    @Override
    public void trace(String format, Object arg) {}

    @Override
    public void trace(String format, Object arg1, Object arg2) {}

    @Override
    public void trace(String format, Object... arguments) {}

    @Override
    public void trace(String msg, Throwable t) {}

    @Override

    CacheLoader<Object, Object> baseLoader =
        new CacheLoader<Object, Object>() {
          @Override
          public Object load(Object key) {
            loadCount.incrementAndGet();
            return new Object();
          }

          @Override
          public ListenableFuture<Object> reload(Object key, Object oldValue) {
            reloadCount.incrementAndGet();

   */
  public static <A extends @Nullable Object, B extends @Nullable Object, C extends @Nullable Object>
      Function<A, C> compose(Function<B, C> g, Function<A, ? extends B> f) {
    return new FunctionComposition<>(g, f);
  }

  private static final class FunctionComposition<
          A extends @Nullable Object, B extends @Nullable Object, C extends @Nullable Object>
      implements Function<A, C>, Serializable {