//   timeout is small we shouldn't park(). This needs to be traded off with the cpu overhead of
  //   spinning, so we use SPIN_THRESHOLD_NANOS which is what AbstractQueuedSynchronizer uses for
  //   similar purposes.
  // * We want to behave reasonably for timeouts of 0
  // * We are more responsive to completion than timeouts. This is because parkNanos depends on

### Use o sub-modelo como um tipo

E então podemos usa-lo como o tipo de um atributo:

{* ../../docs_src/body_nested_models/tutorial004.py hl[20] *}

Isso significa que o **FastAPI** vai esperar um corpo similar à:

```JSON
{
    "name": "Foo",
    "description": "The pretender",
    "price": 42.0,
    "tax": 3.2,
    "tags": ["rock", "metal", "bar"],
    "image": {
        "url": "http://example.com/baz.jpg",

  }

  /**
   * A special purpose queue/executor that dispatches listener events serially on a configured
   * executor. Each event can be added and dispatched as separate phases.
   *
   * <p>This class is very similar to {@link SequentialExecutor} with the exception that events can
   * be added without necessarily executing immediately.
   */
  private static final class PerListenerQueue<L> implements Runnable {
    final L listener;

      checkPositive(++successorCount);

      if (orderedNodeConnections != null) {
        orderedNodeConnections.add(new NodeConnection.Succ<>(node));
      }
    }

    // See the comment on the similar cast in removeSuccessor.
    return previousSuccessor == null ? null : (V) previousSuccessor;
  }

  private static boolean isPredecessor(@Nullable Object value) {

/// check | Checando

Perceba que você não precisa criar uma classe especial e enviar a dependência para algum outro lugar em que o **FastAPI** a "registre" ou realize qualquer operação similar.

Você apenas envia para `Depends` e o **FastAPI** sabe como fazer o resto.

///

## Compartilhando dependências `Annotated`

 *       MoreExecutors#listeningDecorator(java.util.concurrent.ExecutorService)
 *       MoreExecutors.listeningDecorator}.
 *   <li>If you manually call {@link java.util.concurrent.FutureTask#set} or a similar method,
 *       create a {@link SettableFuture} instead. (If your needs are more complex, you may prefer
 *       {@link AbstractFuture}.)
 * </ul>
 *

 *       MoreExecutors#listeningDecorator(java.util.concurrent.ExecutorService)
 *       MoreExecutors.listeningDecorator}.
 *   <li>If you manually call {@link java.util.concurrent.FutureTask#set} or a similar method,
 *       create a {@link SettableFuture} instead. (If your needs are more complex, you may prefer
 *       {@link AbstractFuture}.)
 * </ul>
 *

	if err != nil {
		return "", err
	}
	return trimLeadingSlash(ep), nil
}

// unescapePath is similar to unescapeGeneric but for specifically
// path unescaping.
func unescapePath(p string) (string, error) {
	return unescapeGeneric(p, url.PathUnescape)
}

// similar to unescapeGeneric but never returns any error if the unescaping
// fails, returns the input as is in such occasion, not meant to be

We can see that we were redirected because `response.request().url()` is different from `request.url()`. The two log statements log two different URLs.

### Network Interceptors

Registering a network interceptor is quite similar. Call `addNetworkInterceptor()` instead of `addInterceptor()`:

```java
OkHttpClient client = new OkHttpClient.Builder()
    .addNetworkInterceptor(new LoggingInterceptor())
    .build();

	}
	deleteResp.Errors = errs
	return deleteResp
}

func writeResponse(w http.ResponseWriter, statusCode int, response []byte, mType mimeType) {
	if statusCode == 0 {
		statusCode = 200
	}
	// Similar check to http.checkWriteHeaderCode
	if statusCode < 100 || statusCode > 999 {
		bugLogIf(context.Background(), fmt.Errorf("invalid WriteHeader code %v", statusCode))
		statusCode = http.StatusInternalServerError
	}