throw e.getCause();
    }
  }

  /**
   * Verify that the listener completes in a reasonable amount of time, and Asserts that the future
   * throws an {@code ExecutableException} and that the cause of the {@code ExecutableException} is
   * {@code expectedCause}.
   */
  public void assertException(Throwable expectedCause) throws Exception {
    // Verify that the listener executed in a reasonable amount of time.

        buf.append(cpSeparator);
        // WEB-INF/classes
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("classes");
        // target/classes
        final String userDir = System.getProperty("user.dir");
        final File targetDir = new File(userDir, "target");
        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {

      try {
        val results = dns.lookup(host)
        println(results)
      } catch (uhe: UnknownHostException) {
        var e: Throwable? = uhe
        while (e != null) {
          println(e)
          e = e.cause
        }
      }
    }
    println()
  }
  time = System.currentTimeMillis() - time
  println("Time: ${time.toDouble() / 1000} seconds\n")
}

fun main() {

        buf.append(cpSeparator);
        // WEB-INF/classes
        buf.append("WEB-INF");
        buf.append(File.separator);
        buf.append("classes");
        // target/classes
        final String userDir = System.getProperty("user.dir");
        final File targetDir = new File(userDir, "target");
        final File targetClassesDir = new File(targetDir, "classes");
        if (targetClassesDir.isDirectory()) {

Para fazer isso, use a dica de tipo padrão do Python <a href="https://docs.python.org/3/library/typing.html#typing.Union" class="external-link" target="_blank">`typing.Union`</a>:

/// note

Gérer toutes les parties web de base. Ajouter des fonctionnalités par-dessus.

La classe `FastAPI` elle-même hérite directement de la classe `Starlette`.

Ainsi, tout ce que vous pouvez faire avec Starlette, vous pouvez le faire directement avec **FastAPI**, car il s'agit en fait de Starlette sous stéroïdes.

///

### <a href="https://www.uvicorn.org/" class="external-link" target="_blank">Uvicorn</a>

        case WILL_CREATE_VALUE_AND_CLOSER:
          throw new IllegalStateException(
              "Cannot call finishToFuture() after calling finishToValueAndCloser()");

        case WILL_CLOSE:
        case CLOSING:
        case CLOSED:
          throw new IllegalStateException("Cannot call finishToFuture() twice");

        case OPEN:
          throw new AssertionError();

      other entities that control, are controlled by, or are under common
      control with that entity. For the purposes of this definition,
      "control" means (i) the power, direct or indirect, to cause the
      direction or management of such entity, whether by contract or
      otherwise, or (ii) ownership of fifty percent (50%) or more of the
      outstanding shares, or (iii) beneficial ownership of such entity.

Com `Form` você pode declarar os mesmos metadados e validação que com `Body` (e `Query`, `Path`, `Cookie`).

/// info | Informação

`Form` é uma classe que herda diretamente de `Body`.

///

/// tip | Dica

 * }
 * public void testFooLeak() {
 *   GcFinalization.awaitClear(fooWeakRef());
 * }
 * }
 *
 * <p>This class cannot currently be used to test soft references, since this class does not try to
 * create the memory pressure required to cause soft references to be cleared.
 *
 * <p>This class only provides testing utilities. It is not designed for direct use in production or
 * for benchmarking.
 *