Finalmente, a identidade dos nossos heróis está protegida! 🥷

Ele também declara novamente `id: int`. Ao fazer isso, estamos fazendo um **contrato** com os clientes da API, para que eles possam sempre esperar que o `id` estará lá e será um `int` (nunca será `None`).

/// tip | Dica

   * service changes state. The listener will not have previous state changes replayed, so it is
   * suggested that listeners are added before the service starts.
   *
   * <p>{@code addListener} guarantees execution ordering across calls to a given listener but not
   * across calls to multiple listeners. Specifically, a given listener will have its callbacks

        || validSurrogatePairAt(b, b.length() - s - 1)) {
      s--;
    }
    return a.subSequence(a.length() - s, a.length()).toString();
  }

  /**
   * True when a valid surrogate pair starts at the given {@code index} in the given {@code string}.
   * Out-of-range indexes return false.
   */
  @VisibleForTesting
  static boolean validSurrogatePairAt(CharSequence string, int index) {
    return index >= 0

$ npm install @hey-api/openapi-ts --save-dev

---> 100%
```

</div>

#### Generar el Código del Cliente

Para generar el código del cliente puedes usar la aplicación de línea de comandos `openapi-ts` que ahora estaría instalada.

Como está instalada en el proyecto local, probablemente no podrías llamar a ese comando directamente, pero podrías ponerlo en tu archivo `package.json`.

Podría verse como esto:

```JSON  hl_lines="7"
{

    @DisplayName("Basic getters: address, hostName, inflight, sessions")
    void basicGetters() {
        assertEquals(address, transport.getRemoteAddress());
        assertNull(transport.getRemoteHostName(), "tconHostName starts null");
        assertEquals(0, transport.getInflightRequests());
        assertEquals(0, transport.getNumSessions());
    }

    @Test
    @DisplayName("isDisconnected / isFailed reflect socket and state")

            // Test odd Unicode alignment - headerStart affects alignment
            int bytesWritten = testBlock.writeString(testString, buffer, 2);

            // When even alignment (offset 2), Unicode string starts immediately
            assertTrue(bytesWritten >= 8); // "Test" in Unicode + null terminator
            // First byte should be 'T' in UTF-16LE
            assertEquals(0x54, buffer[2] & 0xFF);
        }

            }
        });

    }

    /**
     * Begins statistics tracking for the specified crawler object.
     * Creates a new statistics object in the cache and starts timing.
     *
     * @param keyObj the crawler object to track (UrlQueue, StatsKeyObject, String, or Number)
     */
    public void begin(final Object keyObj) {
        getCacheKey(keyObj).ifPresent(key -> {

<img src="/img/tutorial/security/image10.png">

/// note

Notice the header `Authorization`, with a value that starts with `Bearer `.

///

## Advanced usage with `scopes` { #advanced-usage-with-scopes }

OAuth2 has the notion of "scopes".

You can use them to add a specific set of permissions to a JWT token.

En este caso, el path original `/app` realmente sería servido en `/api/v1/app`.

Aunque todo tu código esté escrito asumiendo que solo existe `/app`.

{* ../../docs_src/behind_a_proxy/tutorial001.py hl[6] *}

            // Check referral level (little-endian)
            assertEquals(4, dst[0] & 0xFF);
            assertEquals(0, dst[1] & 0xFF);

            // Check path starts at byte 2
            byte[] expectedPathBytes = path.getBytes(StandardCharsets.UTF_16LE);
            byte[] actualPathBytes = new byte[expectedPathBytes.length];