<img src="/img/tutorial/header-param-models/image01.png">
</div>

## Proibindo Cabeçalhos adicionais { #forbid-extra-headers }

Em alguns casos de uso especiais (provavelmente não muito comuns), você pode querer **restringir** os cabeçalhos que você quer receber.

Você pode usar a configuração dos modelos do Pydantic para proibir (`forbid`) quaisquer campos `extra`:

{* ../../docs_src/header_param_models/tutorial002_an_py310.py hl[10] *}

<div class="screenshot">
<img src="/img/tutorial/header-param-models/image01.png">
</div>

## Prohibir Headers Extra { #forbid-extra-headers }

En algunos casos de uso especiales (probablemente no muy comunes), podrías querer **restringir** los headers que deseas recibir.

Puedes usar la configuración del modelo de Pydantic para `prohibir` cualquier campo `extra`:

{* ../../docs_src/header_param_models/tutorial002_an_py310.py hl[10] *}

     */
    T intoCache(T data);

    /**
     * Creates a copy of the data suitable for retrieval from the cache. The retrieved data can be mutated after the
     * cache is queried but the state of the cache must not change so we need to make a copy.
     *
     * @param data The data to retrieve from the cache, must not be {@code null}.

	apiRejectedInvalidTotalMD = NewCounterMD(apiRejectedInvalidTotal,
		"Total number of invalid requests", "type")

	apiRequestsWaitingTotalMD = NewGaugeMD(apiRequestsWaitingTotal,
		"Total number of requests in the waiting queue", "type")
	apiRequestsIncomingTotalMD = NewGaugeMD(apiRequestsIncomingTotal,
		"Total number of incoming requests", "type")

	apiRequestsInFlightTotalMD = NewGaugeMD(apiRequestsInFlightTotal,

	}

	var queueStore store.Store[event.Event]
	if args.QueueDir != "" {
		queueDir := filepath.Join(args.QueueDir, storePrefix+"-mqtt-"+id)
		queueStore = store.NewQueueStore[event.Event](queueDir, args.QueueLimit, event.StoreExtension)
		if err := queueStore.Open(); err != nil {
			return nil, fmt.Errorf("unable to initialize the queue store of MQTT `%s`: %w", id, err)
		}
	}

	target := &MQTTTarget{

///

---

Imaginez que vous êtes l'ordinateur / le programme 🤖 dans cette histoire.

Pendant que vous faites la queue, vous être simplement inactif 😴, attendant votre tour, ne faisant rien de "productif". Mais la queue est rapide car le serveur 💁 prend seulement les commandes (et ne les prépare pas), donc tout va bien.

	}
}

func errInvalidCompression(err error, t CompressionType) *s3Error {
	return &s3Error{
		code:       "InvalidCompressionFormat",
		message:    strings.ToUpper(string(t)) + " is not applicable to the queried object. Please correct the request and try again.",
		statusCode: 400,
		cause:      err,
	}
}

func errInvalidDataSource(err error) *s3Error {
	return &s3Error{
		code:       "InvalidDataSource",

        parameter = null
      } else {
        pos++ // Consume '='.
        pos = value.indexOfNonWhitespace(pos)

        if (pos < value.length && value[pos] == '\"') {
          // Quoted string.
          pos++ // Consume '"' open quote.
          val parameterStart = pos
          pos = value.indexOf('"', pos)
          parameter = value.substring(parameterStart, pos)

    // contract.
    // This is somewhat annoying, but turns out to be very fast in practice. Alternatively, we could
    // drop the contract on the method that enforces this queue like behavior since depending on it
    // is likely to be a bug anyway.

    // N.B. All writes to the list and the next pointers must have happened before the above

## Parámetro `response_model` { #response-model-parameter }

Hay algunos casos en los que necesitas o quieres devolver algunos datos que no son exactamente lo que declara el tipo.