* 청구서를 외부 개발자의 고객에게 전송합니다.
* 돈을 수금합니다.
* API 사용자(외부 개발자)의 API로 다시 알림을 보냅니다.
    * 이는 (여러분의 API에서) 그 외부 개발자가 제공하는 어떤 *external API*로 POST 요청을 보내는 방식으로 수행됩니다(이것이 "callback"입니다).

## 일반적인 **FastAPI** 앱 { #the-normal-fastapi-app }

먼저 콜백을 추가하기 전, 일반적인 API 앱이 어떻게 생겼는지 보겠습니다.

`Invoice` body를 받는 *경로 처리*와, 콜백을 위한 URL을 담는 쿼리 파라미터 `callback_url`이 있을 것입니다.

이 부분은 꽤 일반적이며, 대부분의 코드는 이미 익숙할 것입니다:

		"policy":    encodedPolicy,
		"signature": signature,
	}

	maps.Copy(formData, formInputData)

	// Create the multipart form.
	var buf bytes.Buffer
	w := multipart.NewWriter(&buf)

	// Set the normal formData
	for k, v := range formData {
		w.WriteField(k, v)
	}
	// Set the File formData
	writer, err := w.CreateFormFile("file", "upload.txt")
	if err != nil {
		// return nil, err
		return nil, err

          <version>1.0.0+</version>
          <type>String</type>
          <description>
            The configurator type to use when injecting parameter values into this Mojo. The value is normally deduced
            from the Mojo's implementation language, but can be specified to allow a custom ComponentConfigurator
            implementation to be used.
          </description>
        </field>
        <field>

    return super.values();
  }

  @VisibleForTesting
  @WeakOuter
  final class ValueSet extends Sets.ImprovedAbstractSet<V> {
    /*
     * We currently use a fixed load factor of 1.0, a bit higher than normal to reduce memory
     * consumption.
     */

    @ParametricNullness private final K key;
    @VisibleForTesting @Nullable ValueEntry<K, V>[] hashTable;
    private int size = 0;
    private int modCount = 0;

    return super.values();
  }

  @VisibleForTesting
  @WeakOuter
  final class ValueSet extends Sets.ImprovedAbstractSet<V> {
    /*
     * We currently use a fixed load factor of 1.0, a bit higher than normal to reduce memory
     * consumption.
     */

    @ParametricNullness private final K key;
    @VisibleForTesting @Nullable ValueEntry<K, V>[] hashTable;
    private int size = 0;
    private int modCount = 0;

    /**
     * Reserve an opportunistic lock filter on the open
     */
    public static final int FILE_RESERVE_OPFILTER = 0x100000;
    /**
     * Open a reparse point and bypass normal reparse point processing
     */
    public static final int FILE_OPEN_REPARSE_POINT = 0x200000;
    /**
     * Open does not cause an opportunistic lock break for the file
     */

labels.numOfThread=İş Parçacığı Sayısı
labels.duplicateHostName=Yinelenen Ana Bilgisayar Adı
labels.pageNumber=Sayfa Numarası
labels.password=Şifre
labels.paths=Yollar
labels.port=Port
labels.regex=Regex
labels.regularName=Normal Ad
labels.replacement=Değiştirme
labels.sessionId=Oturum ID
labels.sortOrder=Sıralama Düzeni
labels.updatedBy=Güncelleyen
labels.updatedTime=Güncelleme Zamanı
labels.urls=URL'ler
labels.userAgent=Kullanıcı Aracısı

        assertThrows(IllegalStateException.class, () -> auth.getPasswordAsCharArray());
        assertThrows(IllegalStateException.class, () -> {
            // This would normally be called during authentication
            auth.createContext(null, null, "host", null, false);
        });
    }

    /**
     * Test TTL with different constructor types
     */
    @Test

In OpenAPI (e.g. the API docs), you can define "security schemes".

When one of these security schemes uses OAuth2, you can also declare and use scopes.

Each "scope" is just a string (without spaces).

They are normally used to declare specific security permissions, for example:

* `users:read` or `users:write` are common examples.
* `instagram_basic` is used by Facebook / Instagram.
* `https://www.googleapis.com/auth/drive` is used by Google.

/// tip | Astuce

Vous pouvez utiliser des fonctions `async` ou des fonctions classiques.

**FastAPI** fera ce qu'il faut dans chaque cas, comme avec des dépendances normales.

///

## Créer une dépendance avec `yield` et `try` { #a-dependency-with-yield-and-try }