if nonInterIPV4s.IsEmpty() {
		hostIPs = hostIPs.ApplyFunc(func(ip string) string {
			if net.ParseIP(ip).IsLoopback() {
				// Any loopback IP which is not 127.0.0.1
				// convert it to check for intersections.
				return "127.0.0.1"
			}
			return ip
		})
		nonInterIPV4s = mustGetLocalIP4().Intersection(hostIPs)
	}
	nonInterIPV6s := mustGetLocalIP6().Intersection(hostIPs)

Ni siquiera tienes que verificar si el token existe para devolver un error. Puedes estar seguro de que si tu función se ejecuta, tendrá un `str` en ese token.

Puedes probarlo ya en los docs interactivos:

<img src="/img/tutorial/security/image03.png">

Todavía no estamos verificando la validez del token, pero ya es un comienzo.

## Resumen { #recap }

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* Then click on the "Execute" button, the user interface will communicate with your API, send the parameters, get the results and show them on the screen:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### Alternative API docs upgrade

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* 點擊「Try it out」按鈕，你可以填寫參數並直接與 API 互動：

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* 然後點擊「Execute」按鈕，使用者介面會與你的 API 溝通、送出參數、取得結果並顯示在螢幕上：

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### 替代 API 文件升級 { #alternative-api-docs-upgrade }

   */
  @SuppressWarnings("ThreadPriorityCheck") // TODO: b/175898629 - Consider onSpinWait.
  public void testDirectoryDeletion_directorySymlinkRace() throws Exception {
    int iterations = isAndroid() ? 100 : 5000;
    for (DirectoryDeleteMethod method : EnumSet.allOf(DirectoryDeleteMethod.class)) {
      try (FileSystem fs = newTestFileSystem(SECURE_DIRECTORY_STREAM)) {

Cette section met en avant des solutions **soutenues par des fonds** et **par des entreprises** qui sponsorisent FastAPI. Ces produits offrent **des fonctionnalités supplémentaires** et **des intégrations** en plus de SDK de haute qualité générés.

En ✨ [**sponsorisant FastAPI**](../help-fastapi.md#sponsor-the-author) ✨, ces entreprises contribuent à garantir que le framework et son **écosystème** restent sains et **durables**.

* "Try it out" 버튼을 클릭하면, 매개변수를 채우고 API와 직접 상호작용할 수 있습니다:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* 그런 다음 "Execute" 버튼을 클릭하면, 사용자 인터페이스가 API와 통신하고 매개변수를 전송한 뒤 결과를 받아 화면에 표시합니다:

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### 대안 API 문서 업그레이드 { #alternative-api-docs-upgrade }

	}

	tries++ // tried already once

	// Wait on each try for an update.
	ticker := time.NewTicker(1 * time.Second)
	defer ticker.Stop()

	for {
		// Only log once every 10 iterations, then reset the tries count.
		verbose = tries >= 10
		if verbose {
			tries = 1
		}

* [**Swagger UI**](https://github.com/swagger-api/swagger-ui), bietet interaktive Erkundung, testen und rufen Sie Ihre API direkt im Webbrowser auf.

![Swagger UI Interaktion](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Alternative API-Dokumentation mit [**ReDoc**](https://github.com/Rebilly/ReDoc).

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

* 「Try it out」ボタンをクリックします。パラメータを入力して API と直接やりとりできます。

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-04-swagger-03.png)

* 次に、「Execute」ボタンをクリックします。ユーザーインターフェースは API と通信し、パラメータを送信し、結果を取得して画面に表示します。

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### 代替 API ドキュメントのアップグレード { #alternative-api-docs-upgrade }