Repare que mesmo que o `item` esteja declarado da mesma maneira que antes, agora é esperado que ele esteja dentro do corpo com uma chave `item`.

///

O **FastAPI** fará a conversão automática a partir da requisição, assim esse parâmetro `item` receberá seu respectivo conteúdo e o mesmo ocorrerá com `user`.

Ele executará a validação dos dados compostos e irá documentá-los de maneira compatível com o esquema OpenAPI e documentação automática.

* Share database connections.
* Enforce security, authentication, role requirements, etc.
* And many other things...

All these, while minimizing code repetition.

## First Steps

Let's see a very simple example. It will be so simple that it is not very useful, for now.

But this way we can focus on how the **Dependency Injection** system works.

### Create a dependency, or "dependable"

 * implementations exist for particular cases, like {@link ImmutableTable} views and hash flooding.
 * (This doc discusses {@link ImmutableMap} subclasses only for the JRE flavor; the Android flavor
 * differs.)
 *
 * @author Jesse Wilson
 * @author Kevin Bourrillion
 * @author Gregory Kick
 */
@GwtCompatible(serializable = true, emulated = true)
@ElementTypesAreNonnullByDefault
final class RegularImmutableMap<K, V> extends ImmutableMap<K, V> {

// and detect if there is a loop of requests, typically caused by another component constantly reverting our work.
// Where possible, the remediate steps are logged.
type installationThrottle struct {
	limiter *rate.Limiter
	hits    int
	in      *Installer
}

func newInstallationThrottle(in *Installer) *installationThrottle {
	return &installationThrottle{

///

Este é um tutorial muito simples e curto, se você quiser aprender sobre bancos de dados em geral, sobre SQL ou recursos mais avançados, acesse a <a href="https://sqlmodel.tiangolo.com/" class="external-link" target="_blank">documentação do SQLModel</a>.

## Instalar o `SQLModel`

    list.set(0, (byte) 4);
    assertThat(newArray).isEqualTo(new byte[] {(byte) 0, (byte) 1, (byte) 2});
    newArray[1] = (byte) 5;
    assertThat((byte) list.get(1)).isEqualTo((byte) 1);
  }

  // This test stems from a real bug found by andrewk
  public void testAsList_subList_toArray_roundTrip() {
    byte[] array = {(byte) 0, (byte) 1, (byte) 2, (byte) 3};
    List<Byte> list = Bytes.asList(array);

        }
    }
}

fun BuildType.killProcessStep(mode: KillProcessMode, os: Os, arch: Arch = Arch.AMD64, executionMode: BuildStep.ExecutionMode = BuildStep.ExecutionMode.DEFAULT) {
    steps {
        killProcessStep(this@killProcessStep, mode, os, arch, executionMode)
    }
}

fun String.toCapitalized() = this.replaceFirstChar { if (it.isLowerCase()) it.titlecase(Locale.getDefault()) else it.toString() }

    };
  }

  /**
   * Shuts down the given executor service gradually, first disabling new submissions and later, if
   * necessary, cancelling remaining tasks.
   *
   * <p>The method takes the following steps:
   *
   * <ol>
   *   <li>calls {@link ExecutorService#shutdown()}, disabling acceptance of new submitted tasks.
   *   <li>awaits executor service termination for half of the specified timeout.

   * test makes a single call with two duplex requests!
   */
  @Test
  fun duplexWithAuthChallenge() {
    enableProtocol(Protocol.HTTP_2)
    val credential = basic("jesse", "secret")
    client =
      client.newBuilder()
        .authenticator(RecordingOkAuthenticator(credential, null))
        .build()
    val body1 =
      MockStreamHandler()

 * callbacks. Its subclasses must manage threads manually; consider {@link
 * AbstractExecutionThreadService} if you need only a single execution thread.
 *
 * @author Jesse Wilson
 * @author Luke Sandberg
 * @since 1.0
 */
@GwtIncompatible
@J2ktIncompatible
@ElementTypesAreNonnullByDefault
public abstract class AbstractService implements Service {