@GwtCompatible
public enum IteratorFeature {
  /** Support for {@link Iterator#remove()}. */
  SUPPORTS_REMOVE,
  /**
   * Support for {@link ListIterator#add(Object)}; ignored for plain {@link Iterator}
   * implementations.
   */
  SUPPORTS_ADD,
  /**
   * Support for {@link ListIterator#set(Object)}; ignored for plain {@link Iterator}
   * implementations.
   */
  SUPPORTS_SET;

  /**

    }

    private UrlNormalizer normalizer;

    UrlNormalizingPostProcessor(UrlNormalizer normalizer) {
        this.normalizer = normalizer;
    }

    @Override
    public Object execute(String expression, Object value) {
        if (value != null && URL_EXPRESSIONS.contains(expression)) {
            return normalizer.normalize(value.toString());
        }

        return null;
    }

        "components": {
            "schemas": {
                "ValidationError": {
                    "title": "ValidationError",
                    "required": ["loc", "msg", "type"],
                    "type": "object",
                    "properties": {
                        "loc": {
                            "title": "Location",
                            "type": "array",
                            "items": {

                    "title": "Custom Field",
                    "type": "array",
                }
            },
            "required": ["custom_field"],
            "title": "MyModel",
            "type": "object",
        }
    )


def test_openapi_schema(client: TestClient):
    response = client.get("openapi.json")
    assert response.json() == snapshot(
        {
            "openapi": "3.1.0",

        // should never happen because attributes have no children
        return 0;
    }

    @Override
    public Object getValue() {
        return attrib.getValue();
    }

    @Override
    public Object getBaseValue() {
        return attrib;
    }

    @Override
    public Object getImmediateNode() {
        return attrib;
    }

    @Override
    public int getLength() {
        return 1;

                    },
                }
            }
        },
        "components": {
            "schemas": {
                "Item": {
                    "title": "Item",
                    "type": "object",
                    "properties": {
                        "name": {
                            "title": "Name",
                            "anyOf": [{"type": "string"}, {"type": "null"}],
                        }

      Invokable<A, A> invokable = Invokable.from(constructor);
      assertEquals(constructor.getName(), invokable.getName());
      assertEquals(A.class, invokable.getDeclaringClass());
      return invokable;
    }

    static Invokable<?, Object> method(String name, Class<?>... parameterTypes) throws Exception {
      Invokable<?, Object> invokable =

     *
     * @return JSON response containing system statistics
     */
    // GET /api/admin/stats
    @Execute
    public JsonResponse<ApiResult> index() {
        final HashMap<String, Object> stats = new HashMap<>();
        stats.put("jvm", getJvmObj());
        stats.put("os", getOsObj());
        stats.put("process", getProcessObj());
        stats.put("engine", getEngineObj());

     */
    public static Map<String, Object> getProperties(final Annotation annotation) {
        assertArgumentNotNull("annotation", annotation);

        final Map<String, Object> map = newHashMap();
        final BeanDesc beanDesc = BeanDescFactory.getBeanDesc(annotation.annotationType());
        for (final String name : beanDesc.getMethodNames()) {
            final Object v = getProperty(beanDesc, annotation, name);

                            "title": "Detail",
                            "type": "array",
                        },
                    },
                    "title": "HTTPValidationError",
                    "type": "object",
                },
                "Item": {
                    "properties": {
                        "name": {
                            "title": "Name",
                            "type": "string",