assertEquals("Retention should be RUNTIME", RetentionPolicy.RUNTIME, retention.value());
    }

    // Test annotation target elements
    public void test_targetElements() {
        final Target target = CustomSize.class.getAnnotation(Target.class);
        assertNotNull("Target annotation should be present", target);

### Compruébalo

Abre tu navegador en <a href="http://127.0.0.1:8000" class="external-link" target="_blank">http://127.0.0.1:8000</a>.

Verás el response JSON como:

```JSON
{"message": "Hello World"}
```

### Documentación interactiva de la API

Ahora ve a <a href="http://127.0.0.1:8000/docs" class="external-link" target="_blank">http://127.0.0.1:8000/docs</a>.

👐, Uvicorn ⏳ 🕴 🔗 ⏮️ ✳, &amp; ⚫️ 🛎 ⚙️ <a href="https://github.com/MagicStack/uvloop" class="external-link" target="_blank">`uvloop`</a>, ↕-🎭 💧-♻ `asyncio`.

* <a href="https://hub.docker.com/_/postgres" class="external-link" target="_blank">PostgreSQL</a>
* <a href="https://hub.docker.com/_/mysql" class="external-link" target="_blank">MySQL</a>
* <a href="https://hub.docker.com/_/mongo" class="external-link" target="_blank">MongoDB</a>
* <a href="https://hub.docker.com/_/redis" class="external-link" target="_blank">Redis</a>, etc.

  }

  @Override
  public boolean contains(@Nullable Object object) {
    return object != null && delegate.contains(object);
  }

  @Override
  public boolean containsAll(Collection<?> targets) {
    return delegate.containsAll(targets);
  }

  @Override
  public int size() {
    return delegate.size();
  }

  @Override
  public boolean isEmpty() {
    return delegate.isEmpty();
  }

  @Override

            assertNull(message.getChallenge(), "Challenge should initially be null");
            assertNull(message.getTarget(), "Target should initially be null");
            assertNull(message.getTargetInformation(), "Target information should be null when no target is set");
        }

        @Test
        @DisplayName("Constructor with CIFSContext and Type1Message should derive flags")

Y las siguientes secciones asumen que ya lo leíste y que conoces esas ideas principales.

## Cursos externos

    * <a href="https://fastapi.tiangolo.com/features/" class="external-link" target="_blank">**Birçok diger özelliği**</a> dahili otomatik doğrulama, serialization, interaktif dokümantasyon, OAuth2 JWT token ile authentication, vb....

Any function that is valid to use with:

* <a href="https://docs.python.org/3/library/contextlib.html#contextlib.contextmanager" class="external-link" target="_blank">`@contextlib.contextmanager`</a> or
* <a href="https://docs.python.org/3/library/contextlib.html#contextlib.asynccontextmanager" class="external-link" target="_blank">`@contextlib.asynccontextmanager`</a>

would be valid to use as a **FastAPI** dependency.

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-03-swagger-02.png)

* Alternatieve API-documentatie met <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank"><strong>ReDoc</strong></a>.