summary: str | None = None
    description: str | None = None
    get: Operation | None = None
    put: Operation | None = None
    post: Operation | None = None
    delete: Operation | None = None
    options: Operation | None = None
    head: Operation | None = None
    patch: Operation | None = None
    trace: Operation | None = None
    servers: list[Server] | None = None

  public void testRemove_nullKeyQueriesUnsupported() {
    try {
      assertFalse(getMap().remove(null, v3()));
    } catch (NullPointerException tolerated) {
      // since the operation would be a no-op, the exception is not required
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES)

  public void testRemove_nullKeyQueriesUnsupported() {
    try {
      assertFalse(getMap().remove(null, v3()));
    } catch (NullPointerException tolerated) {
      // since the operation would be a no-op, the exception is not required
    }
    expectUnchanged();
  }

  @MapFeature.Require(value = SUPPORTS_REMOVE, absent = ALLOWS_NULL_VALUE_QUERIES)

- Use the following preferred translations when they apply in documentation prose:

- request (HTTP): 請求
- response (HTTP): 回應
- path operation: 路徑操作
- path operation function: 路徑操作函式

The translation can optionally include the original English text only in the first occurrence of each page (e.g. "路徑操作 (path operation)") if the translation is hard to be comprehended by most of the Chinese readers.

### `///` admonitions

max_sleep      (duration)  maximum sleep duration between objects to slow down heal operation. eg. 2s
max_io         (int)       maximum IO requests allowed between objects to slow down heal operation. eg. 3
drive_workers  (int)       the number of workers per drive to heal a new disk replacement.
```

    /** The requested operation was unsuccessful */
    int NT_STATUS_UNSUCCESSFUL = 0xC0000001;
    /** The requested operation is not implemented */
    int NT_STATUS_NOT_IMPLEMENTED = 0xC0000002;
    /** The specified information class is invalid */
    int NT_STATUS_INVALID_INFO_CLASS = 0xC0000003;
    /** Invalid access to memory location */
    int NT_STATUS_ACCESS_VIOLATION = 0xC0000005;
    /** The handle is invalid */

    return trustedGet(TypeToken.of(type));
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.
   *
   * @deprecated unsupported operation
   * @throws UnsupportedOperationException always
   */
  @CanIgnoreReturnValue
  @Deprecated
  @Override
  @DoNotCall("Always throws UnsupportedOperationException")

## 機能 { #features }

- **Path Operation エクスプローラー** - アプリケーション内のすべての <dfn title="ルート、エンドポイント">*path operations*</dfn> をサイドバーのツリービューで表示します。クリックして任意のルートまたはルーター定義へジャンプできます。
- **ルート検索** - <kbd>Ctrl</kbd> + <kbd>Shift</kbd> + <kbd>E</kbd>（macOS: <kbd>Cmd</kbd> + <kbd>Shift</kbd> + <kbd>E</kbd>）で、パス・メソッド・名前で検索できます。
- **CodeLens ナビゲーション** - テストクライアント呼び出し（例: `client.get('/items')`）の上に表示されるクリック可能なリンクから、対応する *path operation* にジャンプし、テストと実装の行き来をすばやく行えます。

* データ処理:
    * たとえば、時間のかかる処理を必要とするファイル受信時には、「Accepted」(HTTP 202) のレスポンスを返し、バックグラウンドで処理できます。

## `BackgroundTasks` の使用 { #using-backgroundtasks }

まず初めに、`BackgroundTasks` をインポートし、`BackgroundTasks` の型宣言と共に、*path operation function* のパラメーターを定義します:

{* ../../docs_src/background_tasks/tutorial001_py310.py hl[1,13] *}

**FastAPI** は、`BackgroundTasks` 型のオブジェクトを作成し、そのパラメーターに渡します。

## タスク関数の作成 { #create-a-task-function }

        RuntimeException middleCause = new RuntimeException("LDAP configuration error", innerCause);
        LdapOperationException exception = new LdapOperationException("LDAP operation failed", middleCause);

        assertEquals("LDAP operation failed", exception.getMessage());
        assertEquals(middleCause, exception.getCause());
        assertEquals("LDAP configuration error", exception.getCause().getMessage());