)
      },
      construct = {
        Validity(
          notBefore = it[0] as Long,
          notAfter = it[1] as Long,
        )
      },
    )

  /** The type of the parameters depends on the algorithm that precedes it. */
  private val algorithmParameters: DerAdapter<Any?> =
    Adapters.usingTypeHint { typeHint ->
      when (typeHint) {

 * elements, including {@code null}, are permitted.
 *
 * <p>{@code contains(x)}, {@code add(x)} and {@code remove(x)}, are all (expected and amortized)
 * constant time operations. Expected in the hashtable sense (depends on the hash function doing a
 * good job of distributing the elements to the buckets to a distribution not far from uniform), and
 * amortized since some operations can trigger a hash table resize.
 *

      TestCharSource okSource = new TestCharSource(STRING);
      assertThrows(IOException.class, () -> okSource.copyTo(new TestCharSink(option)));
      // ensure reader was closed IF it was opened (depends on implementation whether or not it's
      // opened at all if sink.newWriter() throws).
      assertTrue(
          "stream not closed when copying to sink with option: " + option,

 * elements, including {@code null}, are permitted.
 *
 * <p>{@code contains(x)}, {@code add(x)} and {@code remove(x)}, are all (expected and amortized)
 * constant time operations. Expected in the hashtable sense (depends on the hash function doing a
 * good job of distributing the elements to the buckets to a distribution not far from uniform), and
 * amortized since some operations can trigger a hash table resize.
 *

Şimdi bunu yönetmek için **FastAPI**’nin sağladığı araçları kullanalım.

### `OAuth2PasswordRequestForm` { #oauth2passwordrequestform }

Önce `OAuth2PasswordRequestForm`’u import edin ve `/token` için *path operation* içinde `Depends` ile dependency olarak kullanın:

{* ../../docs_src/security/tutorial003_an_py310.py hl[4,78] *}

`OAuth2PasswordRequestForm`, şu alanları içeren bir form body tanımlayan bir class dependency’sidir:

* `username`.

 * of the Bloom filters that use them, thus they must be preserved as is (no updates allowed, only
 * introduction of new versions).
 *
 * <p>Important: the order of the constants cannot change, and they cannot be deleted - we depend on
 * their ordinal for BloomFilter serialization.
 *
 * @author Dimitris Andreou
 * @author Kurt Alfred Kluever
 */
enum BloomFilterStrategies implements BloomFilter.Strategy {
  /**

 * not consistent with {@code equals}.
 *
 * <p>The {@code standard} methods and the collection views they return are not guaranteed to be
 * thread-safe, even when all of the methods that they depend on are thread-safe.
 *
 * @author Kevin Bourrillion
 * @author Jared Levy
 * @author Louis Wasserman
 * @since 2.0
 */
@GwtCompatible

### `OAuth2PasswordRequestForm` { #oauth2passwordrequestform }

Сначала импортируйте `OAuth2PasswordRequestForm` и затем используйте её как зависимость с `Depends` в операции пути для `/token`:

{* ../../docs_src/security/tutorial003_an_py310.py hl[4,78] *}

`OAuth2PasswordRequestForm` — это зависимость-класс, которая объявляет тело формы со следующими полями:

* `username`.

  // * We are more responsive to completion than timeouts. This is because parkNanos depends on
  //   system scheduling and as such we could either miss our deadline, or unpark() could be delayed
  //   so that it looks like we timed out even though we didn't. For comparison FutureTask respects
  //   completion preferably and AQS is non-deterministic (depends on where in the queue the waiter

通常、`yield`を持つ依存関係の終了コードは、クライアントに**レスポンスが送信された後**に実行されます。

しかし、*path operation 関数*からreturnした後に依存関係を使う必要がないと分かっている場合は、`Depends(scope="function")`を使って、**レスポンスが送信される前**に、*path operation 関数*のreturn後に依存関係を閉じるべきだとFastAPIに伝えられます。

{* ../../docs_src/dependencies/tutorial008e_an_py310.py hl[12,16] *}

`Depends()`は、以下のいずれかを取る`scope`パラメータを受け取ります: