```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2
}
```

しかし、`item`と`user`のように複数のボディパラメータを宣言することもできます:

{* ../../docs_src/body_multiple_params/tutorial002.py hl[22] *}

この場合、**FastAPI**は関数内に複数のボディパラメータ（Pydanticモデルである２つのパラメータ）があることに気付きます。

そのため、パラメータ名をボディのキー（フィールド名）として使用し、以下のようなボディを期待しています:

```JSON
{
    "item": {
        "name": "Foo",

        message[38] = 8; // Max Length
        message[39] = 0;
        message[40] = 124; // Offset
        message[41] = 0;
        message[42] = 0;
        message[43] = 0;

        // Workstation (22 bytes "WORKSTATION" in Unicode at offset 132)
        message[44] = 22; // Length
        message[45] = 0;
        message[46] = 22; // Max Length
        message[47] = 0;
        message[48] = (byte) 132; // Offset

  }

  public void testCopyOf_array_nonempty() {
    long[] array = new long[] {0, 1, 3};
    ImmutableLongArray iia = ImmutableLongArray.copyOf(array);
    array[2] = 2;
    assertThat(iia.asList()).containsExactly(0L, 1L, 3L).inOrder();
  }

  public void testCopyOf_iterable_notCollection_empty() {
    Iterable<Long> iterable = iterable(Collections.<Long>emptySet());

  login: SwftAlpc
  count: 23
  avatarUrl: https://avatars.githubusercontent.com/u/52768429?u=6a3aa15277406520ad37f6236e89466ed44bc5b8&v=4
  url: https://github.com/SwftAlpc
hasansezertasan:
  login: hasansezertasan
  count: 22
  avatarUrl: https://avatars.githubusercontent.com/u/13135006?u=99f0b0f0fc47e88e8abb337b4447357939ef93e7&v=4
  url: https://github.com/hasansezertasan
waynerv:
  login: waynerv
  count: 20

	ADDW	$1, R2, R3
	ADDW	R1, R2, R3
	ADDW	R1, ZR, R3
	ADD	$1, R2, R3
	ADD	R1, R2, R3
	ADD	R1, ZR, R3
	ADD	$1, R2, R3
	ADDW	$1, R2
	ADDW	R1, R2
	ADD	$1, R2
	ADD	R1, R2
	ADD	R1>>11, R2
	ADD	R1<<22, R2
	ADD	R1->33, R2
	ADD	$0x000aaa, R2, R3               // ADD $2730, R2, R3                      // 43a82a91
	ADD	$0x000aaa, R2                   // ADD $2730, R2                          // 42a82a91

            when(mockChunk1.encode(any(byte[].class), anyInt())).thenReturn(20);
            when(mockChunk2.encode(any(byte[].class), anyInt())).thenReturn(24);
            when(mockChunk3.encode(any(byte[].class), anyInt())).thenReturn(22);

            SrvCopychunkCopy copy = new SrvCopychunkCopy(sourceKey, mockChunk1, mockChunk2, mockChunk3);
            byte[] buffer = new byte[200];

            // When

	fileHeaderLen            = 30         // + filename + extra
	directoryHeaderLen       = 46         // + filename + extra + comment
	directoryEndLen          = 22         // + comment
	dataDescriptorLen        = 16         // four uint32: descriptor signature, crc32, compressed size, size
	dataDescriptor64Len      = 24         // two uint32: signature, crc32 | two uint64: compressed size, size

모든 데이터 변환, 검증, 문서화 등은 정상적으로 작동할 것입니다.

이렇게 하면 각 모델 간의 차이점만 선언할 수 있습니다(평문 `password`가 있는 경우, `hashed_password`만 있는 경우, 혹은 비밀번호가 없는 경우):

{* ../../docs_src/extra_models/tutorial002_py310.py hl[7,13:14,17:18,21:22] *}

## `Union` 또는 `anyOf`

두 가지 이상의 타입을 포함하는 `Union`으로 응답을 선언할 수 있습니다. 이는 응답이 그 중 하나의 타입일 수 있음을 의미합니다.

OpenAPI에서는 이를 `anyOf`로 정의합니다.

- [v1.22.0-alpha.3](#v1220-alpha3)
  - [Downloads for v1.22.0-alpha.3](#downloads-for-v1220-alpha3)
    - [Source Code](#source-code-22)
    - [Client Binaries](#client-binaries-22)
    - [Server Binaries](#server-binaries-22)
    - [Node Binaries](#node-binaries-22)
  - [Changelog since v1.22.0-alpha.2](#changelog-since-v1220-alpha2)
  - [Urgent Upgrade Notes](#urgent-upgrade-notes-3)

  - [Downloads for v1.23.0-alpha.3](#downloads-for-v1230-alpha3)
    - [Source Code](#source-code-22)
    - [Client Binaries](#client-binaries-22)
    - [Server Binaries](#server-binaries-22)
    - [Node Binaries](#node-binaries-22)
  - [Changelog since v1.23.0-alpha.2](#changelog-since-v1230-alpha2)
  - [Changes by Kind](#changes-by-kind-22)
    - [Deprecation](#deprecation-3)
    - [API Change](#api-change-10)