* This does perform a little more work than necessary, so another option is to insert an
   * unchecked cast at some later point:
   *
   * {@snippet :
   * @SuppressWarnings("unchecked") // safe because of ::isInstance check
   * ImmutableList<NewType> result =
   *     (ImmutableList) stream.filter(NewType.class::isInstance).collect(toImmutableList());
   * }
   */
  @SuppressWarnings("unchecked")
  @GwtIncompatible // Class.isInstance

event.delegationSelector === delegationSelector)\n}\n\nfunction normalizeParameters(originalTypeEvent, handler, delegationFunction) {\n  const isDelegated = typeof handler === 'string'\n  // TODO: tooltip passes `false` instead of selector, so we need to check\n  const callable = isDelegated ? delegationFunction : (handler || delegationFunction)\n  let typeEvent = getTypeEvent(originalTypeEvent)\n\n  if (!nativeEvents.has(typeEvent)) {\n    typeEvent = originalTypeEvent\n  }\n\n  return [isDelegated, callable,...

Der wesentliche Punkt ist, dass der `sub`-Schlüssel in der gesamten Anwendung eine eindeutige Kennung haben sollte, und er sollte ein String sein.

## Es testen { #check-it }

Führen Sie den Server aus und gehen Sie zur Dokumentation: [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

Die Benutzeroberfläche sieht wie folgt aus:

<img src="/img/tutorial/security/image07.png">

Lo importante a tener en cuenta es que la clave `sub` debería tener un identificador único a lo largo de toda la aplicación, y debería ser un string.

## Revisa { #check-it }

Ejecuta el servidor y ve a la documentación: [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

Verás la interfaz de usuario como:

<img src="/img/tutorial/security/image07.png">

/// info | Bilgi

`response_description` özellikle response’u ifade eder; `description` ise genel olarak *path operation*’ı ifade eder.

///

/// check | Ek bilgi

OpenAPI, her *path operation* için bir response description zorunlu kılar.

Bu yüzden siz sağlamazsanız, **FastAPI** otomatik olarak "Successful response" üretir.

///

{* ../../docs_src/query_params/tutorial002_py310.py hl[7] *}

У цьому випадку параметр функції `q` буде необов’язковим і за замовчуванням матиме значення `None`.

/// check | Перевірте

Також зверніть увагу, що **FastAPI** достатньо розумний, щоб визначити, що параметр шляху `item_id` є параметром шляху, а `q` — ні, отже, це параметр query.

///

URL’yi ilk kez açmaya çalıştığınızda (veya dokümanlardaki "Execute" butonuna tıkladığınızda) tarayıcı sizden kullanıcı adınızı ve şifrenizi ister:

<img src="/img/tutorial/security/image12.png">

## Kullanıcı adını kontrol edin { #check-the-username }

Daha kapsamlı bir örneğe bakalım.

Kullanıcı adı ve şifrenin doğru olup olmadığını kontrol etmek için bir dependency kullanın.

/// info

Notez que `response_description` se réfère spécifiquement à la réponse, tandis que `description` se réfère au *chemin d'accès* en général.

///

/// check | Vérifications

OpenAPI spécifie que chaque *chemin d'accès* requiert une description de réponse.

Donc, si vous n'en fournissez pas, **FastAPI** en générera automatiquement une « Réponse réussie ».

///

### 메서드 오버라이드하기 { #override-the-method }

이제 `.openapi()` 메서드를 새 함수로 교체할 수 있습니다.

{* ../../docs_src/extending_openapi/tutorial001_py310.py hl[29] *}

### 확인하기 { #check-it }

[http://127.0.0.1:8000/redoc](http://127.0.0.1:8000/redoc)로 이동하면 커스텀 로고(이 예시에서는 **FastAPI** 로고)를 사용하는 것을 확인할 수 있습니다:

```

</div>

## Revisa { #check-it }

Ve a la documentación interactiva en: [http://127.0.0.1:8000/docs](http://127.0.0.1:8000/docs).

Verás algo así:

<img src="/img/tutorial/security/image01.png">

/// check | ¡Botón de autorización!

Ya tienes un nuevo y brillante botón de "Authorize".