new TestEnumSetGenerator() {
              @Override
              public Set<AnEnum> create(AnEnum[] elements) {
                return (elements.length == 0)
                    ? EnumSet.noneOf(AnEnum.class)
                    : EnumSet.copyOf(MinimalCollection.of(elements));
              }
            })
        .named("EnumSet")
        .withFeatures(
            SetFeature.GENERAL_PURPOSE,

            return handle;
        }).when(c).connectHost(any(), anyString());

        // Execute send - should retry after transport error
        try {
            c.send(loc, req, resp, EnumSet.noneOf(RequestParam.class));
        } catch (Exception e) {
            // It's ok if it fails, we just want to verify reset was called
        }

        // Request/response reset should happen on retry

            throws CIFSException {
        return send((CommonServerMessageBlockRequest) request, request.getResponse(),
                params != null && params.length > 0 ? EnumSet.copyOf(Arrays.asList(params)) : EnumSet.noneOf(RequestParam.class));
    }

    <T extends CommonServerMessageBlockResponse> T send(final CommonServerMessageBlockRequest request, final T response)
            throws CIFSException {

            final T response, final RequestParam... params) throws CIFSException {
        return send(loc, request, response,
                params.length == 0 ? EnumSet.noneOf(RequestParam.class) : EnumSet.copyOf(Arrays.asList(params)));
    }

    <T extends CommonServerMessageBlockResponse> T send(final SmbResourceLocatorImpl loc, final CommonServerMessageBlockRequest request,

      ascii()
          .and(javaIsoControl().negate())
          .and(CharMatcher.isNot(' '))
          .and(CharMatcher.noneOf("()<>@,;:\\\"/[]?="));

  private static final CharMatcher QUOTED_TEXT_MATCHER = ascii().and(CharMatcher.noneOf("\"\\\r"));

  /*
   * This matches the same characters as linear-white-space from RFC 822, but we make no effort to

    private final Class<V> clazz;

    EnumSetSupplier(Class<V> clazz) {
      this.clazz = checkNotNull(clazz);
    }

    @Override
    public Set<V> get() {
      return EnumSet.noneOf(clazz);
    }
  }

  /**
   * An intermediate stage in a {@link MultimapBuilder} in which the key-value collection map
   * implementation has been specified, but the value collection implementation has not.

    private final Class<V> clazz;

    EnumSetSupplier(Class<V> clazz) {
      this.clazz = checkNotNull(clazz);
    }

    @Override
    public Set<V> get() {
      return EnumSet.noneOf(clazz);
    }
  }

  /**
   * An intermediate stage in a {@link MultimapBuilder} in which the key-value collection map
   * implementation has been specified, but the value collection implementation has not.

```

`name` 매개변수는 기본값이 없기 때문에 여전히 필수입니다(선택적이 아님). 대신, `name`에는 `None`을 전달할 수 있습니다:

```Python
say_hi(name=None)  # 작동합니다. None은 유효합니다 🎉
```

좋은 소식은, 대부분의 경우 타입의 합집합을 정의할 때 그냥 `|`를 사용할 수 있다는 점입니다:

```python
def say_hi(name: str | None):
    print(f"Hey {name}!")
```

    type: SchemaType | list[SchemaType] | None = None
    enum: list[Any] | None = None
    const: Any | None = None
    multipleOf: float | None = Field(default=None, gt=0)
    maximum: float | None = None
    exclusiveMaximum: float | None = None
    minimum: float | None = None
    exclusiveMinimum: float | None = None
    maxLength: int | None = Field(default=None, ge=0)
    minLength: int | None = Field(default=None, ge=0)

        default_factory: Callable[[], Any] | None = _Unset,
        annotation: Any | None = None,
        alias: str | None = None,
        alias_priority: int | None = _Unset,
        validation_alias: str | AliasPath | AliasChoices | None = None,
        serialization_alias: str | None = None,
        title: str | None = None,
        description: str | None = None,
        gt: float | None = None,
        ge: float | None = None,