? EMPTY
        : new ImmutableDoubleArray(array, start + startIndex, start + endIndex);
  }

  @IgnoreJRERequirement // used only from APIs that use streams
  /*
   * We declare this as package-private, rather than private, to avoid generating a synthetic
   * accessor method (under -target 8) that would lack the Android flavor's @IgnoreJRERequirement.
   */
  Spliterator.OfDouble spliterator() {

    return startIndex == endIndex
        ? EMPTY
        : new ImmutableIntArray(array, start + startIndex, start + endIndex);
  }

  @IgnoreJRERequirement // used only from APIs that use streams
  /*
   * We declare this as package-private, rather than private, to avoid generating a synthetic
   * accessor method (under -target 8) that would lack the Android flavor's @IgnoreJRERequirement.
   */
  Spliterator.OfInt spliterator() {

Por ejemplo, `list[int]` comprobaría (y documentaría) que el contenido de la list son enteros. Pero `list` sola no lo haría.

///

## Declarar más metadatos { #declare-more-metadata }

Puedes agregar más información sobre el parámetro.

Esa información se incluirá en el OpenAPI generado y será utilizada por las interfaces de usuario de documentación y herramientas externas.

* Vérifier s'il existe un paramètre de requête optionnel nommé `q` (comme dans `http://127.0.0.1:8000/items/foo?q=somequery`) pour les requêtes `GET`.
    * Comme le paramètre `q` est déclaré avec `= None`, il est optionnel.
    * Sans le `None`, il serait requis (comme l'est le corps dans le cas de `PUT`).
* Pour les requêtes `PUT` vers `/items/{item_id}`, lire le corps au format JSON :

    StringBuilder sb = new StringBuilder(16);
    lowerBound.describeAsLowerBound(sb);
    sb.append("..");
    upperBound.describeAsUpperBound(sb);
    return sb.toString();
  }

  // We declare accessors so that we can use method references like `Range::lowerBound`.

  Cut<C> lowerBound() {
    return lowerBound;
  }

  Cut<C> upperBound() {
    return upperBound;
  }

If you need to upgrade a version or add a new package you would **do this again**.

///

### Install Packages Directly { #install-packages-directly }

If you're in a hurry and don't want to use a file to declare your project's package requirements, you can install them directly.

/// tip

It's a (very) good idea to put the packages and versions your program needs in a file (for example `requirements.txt` or `pyproject.toml`).

/// note | 참고

이 경우 FastAPI는 리스트의 내용을 검사하지 않음을 명심하세요.

예를 들어, `list[int]`는 리스트 내용이 정수인지 검사(및 문서화)합니다. 하지만 `list` 단독일 경우는 아닙니다.

///

## 더 많은 메타데이터 선언 { #declare-more-metadata }

매개변수에 대한 정보를 추가할 수 있습니다.

해당 정보는 생성된 OpenAPI에 포함되고 문서 사용자 인터페이스 및 외부 도구에서 사용됩니다.

/// note | 참고

도구에 따라 OpenAPI 지원 수준이 다를 수 있음을 명심하세요.

   *
   * @see Stream#findFirst()
   * @throws NullPointerException if the last element of the stream is null
   */
  /*
   * By declaring <T> instead of <T extends @Nullable Object>, we declare this method as requiring a
   * stream whose elements are non-null. However, the method goes out of its way to still handle
   * nulls in the stream. This means that the method can safely be used with a stream that contains

    StringBuilder sb = new StringBuilder(16);
    lowerBound.describeAsLowerBound(sb);
    sb.append("..");
    upperBound.describeAsUpperBound(sb);
    return sb.toString();
  }

  // We declare accessors so that we can use method references like `Range::lowerBound`.

  Cut<C> lowerBound() {
    return lowerBound;
  }

  Cut<C> upperBound() {
    return upperBound;
  }

簡単のため、ここでは受け取ったスコープをそのままトークンに追加しています。

しかし、本番アプリケーションではセキュリティのため、ユーザーが実際に持つことができるスコープ、または事前に定義したスコープだけを追加するようにしてください。

///

{* ../../docs_src/security/tutorial005_an_py310.py hl[157] *}

## path operation と依存関係でスコープを宣言 { #declare-scopes-in-path-operations-and-dependencies }

ここでは、`/users/me/items/` の path operation が `items` スコープを必要とするように宣言します。

そのために、`fastapi` から `Security` をインポートして使います。