return;
        case 2:
            hard = true;
        case 3: /* connected - go ahead and disconnect */
            if (response_map.size() != 0 && !hard) {
                break; /* outstanding requests */
            }
            try {
                doDisconnect(hard);
            } catch (final IOException ioe0) {
                ioe = ioe0;
            }

Dalam kondisi ini, ini berarti attribut JSON dan tipe data yang dimiliki, dll.

#### Schema OpenAPI and JSON

"schema" OpenAPI mendefinisikan skema API dari API yang anda buat. Skema tersebut termasuk definisi (atau "schema") dari data yang dikirim atau diterima oleh API dari **JSON Schema**, skema data standar JSON.

#### Lihat `openapi.json`

Por ejemplo, podrías querer **devolver un diccionario** u objeto de base de datos, pero **declararlo como un modelo de Pydantic**. De esta manera el modelo de Pydantic haría toda la documentación de datos, validación, etc. para el objeto que devolviste (por ejemplo, un diccionario u objeto de base de datos).

    /**
     * Disconnect the transport
     *
     * @param hard if true, disconnect immediately without waiting for outstanding requests
     * @return whether connection was in use
     * @throws IOException if an I/O error occurs during disconnection
     */
    public synchronized boolean disconnect(final boolean hard) throws IOException {
        return disconnect(hard, true);
    }

    /**
     * Disconnect the transport

* **Cepat untuk coding**: Meningkatkan kecepatan pengembangan fitur dari 200% sampai 300%. *
* **Sedikit bug**: Mengurangi hingga 40% kesalahan dari manusia (pemrogram). *
* **Intuitif**: Dukungan editor hebat. <abbr title="juga dikenal otomatis-lengkap, pelengkapan otomatis, kecerdasan">Penyelesaian</abbr> di mana pun. Lebih sedikit *debugging*.

    @ParameterizedTest
    @DisplayName("disconnect returns expected for flag combinations")
    @CsvSource({
            // hard, inuse, expected
            "true,true,false", "true,false,true", "false,true,true", "false,false,false" })
    void disconnect_flagCombinations(boolean hard, boolean inuse, boolean expected) throws Exception {
        when(transport.disconnect(anyBoolean(), anyBoolean())).thenAnswer(inv -> {

  url: https://github.com/AlertRED
hard-coders:
  login: hard-coders
  count: 15
  avatarUrl: https://avatars.githubusercontent.com/u/9651103?u=95db33927bbff1ed1c07efddeb97ac2ff33068ed&v=4
  url: https://github.com/hard-coders
Joao-Pedro-P-Holanda:
  login: Joao-Pedro-P-Holanda
  count: 14
  avatarUrl: https://avatars.githubusercontent.com/u/110267046

   * gigantic heap, in which case we scale by heap size.
   */
  private static long timeoutSeconds() {
    // This class can make no hard guarantees.  The methods in this class are inherently flaky, but
    // we try hard to make them robust in practice.  We could additionally try to add in a system
    // load timeout multiplier.  Or we could try to use a CPU time bound instead of wall clock time

   * gigantic heap, in which case we scale by heap size.
   */
  private static long timeoutSeconds() {
    // This class can make no hard guarantees.  The methods in this class are inherently flaky, but
    // we try hard to make them robust in practice.  We could additionally try to add in a system
    // load timeout multiplier.  Or we could try to use a CPU time bound instead of wall clock time

```Python
= None
```

o la parte:

```Python
= Query(default=None)
```

ya que usará ese `None` como el valor por defecto, y de esa manera hará el parámetro **no requerido**.

La parte `Union[str, None]` permite que tu editor brinde un mejor soporte, pero no es lo que le dice a FastAPI que este parámetro no es requerido.

///