중복 헤더의 모든 값을 파이썬 `list`로 수신합니다.

예를 들어, 두 번 이상 나타날 수 있는 `X-Token`헤더를 선언하려면, 다음과 같이 작성합니다:

```Python hl_lines="9"
{!../../docs_src/header_params/tutorial003.py!}
```

다음과 같은 두 개의 HTTP 헤더를 전송하여 해당 *경로* 와 통신할 경우:

```
X-Token: foo
X-Token: bar
```

응답은 다음과 같습니다:

```JSON
{
    "X-Token values": [
        "bar",
        "foo"
    ]
}
```

## 요약

    name: Add to project
    runs-on: ubuntu-latest
    steps:
      - uses: actions/add-to-project@v1.0.2
        with:
          project-url: https://github.com/orgs/fastapi/projects/2

    """
    OAuth2 flow for authentication using a bearer token obtained with an OAuth2 code
    flow. An instance of it would be used as a dependency.
    """

    def __init__(
        self,
        authorizationUrl: str,
        tokenUrl: Annotated[
            str,
            Doc(
                """
                The URL to obtain the OAuth2 token.
                """
            ),
        ],

    public void setExpires(final Date date) {
        setExpiredTime(date != null ? date.getTime() : null);
    }

    @Override
    public String toString() {
        return "AccessToken [name=" + name + ", token=" + token + ", permissions=" + Arrays.toString(permissions) + ", parameterName="
                + parameterName + ", createdBy=" + createdBy + ", createdTime=" + createdTime + ", updatedBy=" + updatedBy

			validConfigFilename:   "list.conflist.golden",
			saFilename:            "token-foo",
		},
		{
			name:                "standalone CNI plugin",
			cniConfigFilename:   "istio-cni.conf",
			validConfigFilename: "istio-cni.conf",
			saFilename:          "token-foo",
			saNewFilename:       "token-bar",
		},
	}

	for _, c := range cases {
		t.Run(c.name, func(t *testing.T) {

    if item_id not in fake_db:
        raise HTTPException(status_code=404, detail="Item not found")
    return fake_db[item_id]


@app.post("/items/", response_model=Item)
async def create_item(item: Item, x_token: Annotated[str, Header()]):
    if x_token != fake_secret_token:
        raise HTTPException(status_code=400, detail="Invalid X-Token header")
    if item.id in fake_db:

def test_token():
    response = client.get("/items", headers={"Authorization": "Bearer testtoken"})
    assert response.status_code == 200, response.text
    assert response.json() == {"token": "testtoken"}


def test_incorrect_token():
    response = client.get("/items", headers={"Authorization": "Notexistent testtoken"})
    assert response.status_code == 401, response.text

                visitor.onText(text);
            }
        }

        @Override
        void onEnd() {
            while (!elementStack.isEmpty()) {
                visitor.onEndHtmlElement(elementStack.removeFirst());
            }
            visitor.onEnd();
        }
    }

	if clntHashedPayload != "" && clntHashedPayload != query.Get(xhttp.AmzContentSha256) {
		return ErrContentSHA256Mismatch
	}
	// Verify if security token is correct.
	if token != "" && subtle.ConstantTimeCompare([]byte(token), []byte(cred.SessionToken)) != 1 {
		return ErrInvalidToken
	}

	// Verify finally if signature is same.

	// Get canonical request.

	default:
		return xml.UnmarshalError(fmt.Sprintf("expected element type <LegalHold>/<ObjectLockLegalHold> but have <%s>",
			start.Name.Local))
	}
	for {
		// Read tokens from the XML document in a stream.
		t, err := d.Token()
		if err != nil {
			if err == io.EOF {
				break
			}
			return err
		}

		if se, ok := t.(xml.StartElement); ok {
			switch se.Name.Local {
			case "Status":