# TODO: remove when deprecating Pydantic v1
                        ["username"],
                    ),
                    "type": "object",
                    "properties": {
                        "username": {"title": "Username", "type": "string"},
                        "email": IsDict(
                            {

                        # TODO: remove when deprecating Pydantic v1
                        ["username"],
                    ),
                    "type": "object",
                    "properties": {
                        "username": {"title": "Username", "type": "string"},
                        "email": IsDict(
                            {

                }
            }
        },
        "components": {
            "schemas": {
                "HTTPValidationError": {
                    "title": "HTTPValidationError",
                    "type": "object",
                    "properties": {
                        "detail": {
                            "title": "Detail",
                            "type": "array",

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

/**
 * An iterator that transforms a backing list iterator; for internal use. This avoids the object
 * overhead of constructing a {@link Function} for internal methods.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
abstract class TransformedListIterator<F extends @Nullable Object, T extends @Nullable Object>
    extends TransformedIterator<F, T> implements ListIterator<T> {

/**
 * An iterator that transforms a backing list iterator; for internal use. This avoids the object
 * overhead of constructing a {@link Function} for internal methods.
 *
 * @author Louis Wasserman
 */
@GwtCompatible
@ElementTypesAreNonnullByDefault
abstract class TransformedListIterator<F extends @Nullable Object, T extends @Nullable Object>
    extends TransformedIterator<F, T> implements ListIterator<T> {

 *
 * @author Chris Povirk
 */
final class Platform {
  /** Serializes and deserializes the specified object (a no-op under GWT). */
  @SuppressWarnings("unchecked")
  static <T> T reserialize(T object) {
    return checkNotNull(object);
  }

  private Platform() {}

     * @throws InvocationTargetRuntimeException
     *             基本となるメソッドが例外をスローする場合
     * @see Method#invoke(Object, Object[])
     */
    @SuppressWarnings("unchecked")
    public static <T> T invoke(final Method method, final Object target, final Object... args)
            throws InvocationTargetRuntimeException, IllegalAccessRuntimeException {
        assertArgumentNotNull("method", method);

  }

  public void testToOptionalSingleton() {
    assertThat(Stream.of(1).collect(toOptional())).hasValue(1);
  }

  public void testToOptionalNull() {
    Stream<@Nullable Object> stream = Stream.of((Object) null);
    assertThrows(NullPointerException.class, () -> stream.collect(toOptional()));
  }

  public void testToOptionalMultiple() {
    IllegalArgumentException expected =

    delegateList.forEach(action);
  }

  @GwtIncompatible // not present in emulated superclass
  @Override
  int copyIntoArray(@Nullable Object[] dst, int offset) {
    return delegateList.copyIntoArray(dst, offset);
  }

  @Override
  @CheckForNull
  Object[] internalArray() {
    return delegateList.internalArray();
  }

  @Override
  int internalArrayStart() {
    return delegateList.internalArrayStart();