context.invalidate();
            throw new CIFSException("Failed to update preauth integrity hash for session " + sessionId, e);
        }
    }

    /**
     * Validates the preauth integrity for completed negotiation.
     *
     * @param sessionId the session identifier
     * @param expectedHash the expected final hash
     * @return true if validation passes
     * @throws CIFSException if validation fails

Sie können für Typ Deklarationen auch `str`, `float`, `bool` und viele andere komplexe Datentypen verwenden.

Mehrere davon werden wir in den nächsten Kapiteln erkunden.

## Die Reihenfolge ist wichtig

Wenn Sie *Pfadoperationen* erstellen, haben Sie manchmal einen fixen Pfad.

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

## Verifique o usuário

Aqui está um exemplo mais completo.

Utilize uma dependência para verificar se o usuário e a senha estão corretos.

 * code, running tests, packaging the project, and deploying it. Executing a phase
 * triggers all preceding phases, ensuring that each step of the build process is
 * completed in the correct order. The three main lifecycles in Maven are
 * {@link #DEFAULT default}, {@link #CLEAN clean}, and {@link #SITE site}, with the
 * {@code default} lifecycle being the most commonly used for project builds.
 *

	s.Set(key, cacheStmt)
	// Unlock after completing initialization to prevent deadlocks.
	locker.Unlock()

	// Ensure the prepared channel is closed after the function execution completes.
	defer close(cacheStmt.prepared)

	// Prepare the SQL statement using the provided connection.
	cacheStmt.Stmt, err = conn.PrepareContext(ctx, key)
	if err != nil {

Senden Sie einen Body mit einem `GET`-Request, dann führt das laut Spezifikation zu undefiniertem Verhalten. Trotzdem wird es von FastAPI unterstützt, für sehr komplexe/extreme Anwendungsfälle.

                    }
                }
            }
        }

        /**
         * Sets the finished flag to indicate whether the process has completed.
         * @param finished True if the process has finished, false otherwise.
         */
        public void setFinished(final boolean finished) {
            this.finished = finished;
        }

        /**

internal fun BufferedSource.readMedium(): Int =
  (
    readByte() and 0xff shl 16
      or (readByte() and 0xff shl 8)
      or (readByte() and 0xff)
  )

/** Run [block] until it either throws an [IOException] or completes. */
internal inline fun ignoreIoExceptions(block: () -> Unit) {
  try {
    block()
  } catch (_: IOException) {
  }
}

internal fun Buffer.skipAll(b: Byte): Int {
  var count = 0

```Python
item: Item = Body(embed=True)
```

Voici un exemple complet :

{* ../../docs_src/body_multiple_params/tutorial005_an_py310.py hl[17] *}

Dans ce cas **FastAPI** attendra un body semblable à :

```JSON hl_lines="2"
{
    "item": {
        "name": "Foo",

///

```Python
commons: CommonQueryParams = Depends()
```

////

Declaras la dependencia como el tipo del parámetro, y usas `Depends()` sin ningún parámetro, en lugar de tener que escribir la clase completa *otra vez* dentro de `Depends(CommonQueryParams)`.

El mismo ejemplo se vería entonces así:

{* ../../docs_src/dependencies/tutorial004_an_py310.py hl[19] *}

...y **FastAPI** sabrá qué hacer.