private static Class<? extends Annotation> asAnnotation(Class<?> clazz) {
    if (clazz.isAnnotation()) {
      return (Class<? extends Annotation>) clazz;
    } else {
      throw new IllegalArgumentException(rootLocaleFormat("%s is not an annotation.", clazz));
    }
  }

  public void testFeatureEnums() throws Exception {
    assertGoodFeatureEnum(CollectionFeature.class);

        OldBase returnTypeOverridenMethod() { return null }
    }

    static class OldSub extends OldBase {
        OldSub returnTypeOverridenMethod() { return null }
    }

    static class NewSuperInternal {}

    static class NewBase extends NewSuperInternal {}

    static class NewSub extends NewBase {}

    Map classes = [:]

    def setup() {

        java.lang.reflect.Field field = TestBean.class.getDeclaredField("directField");

        // First access
        helper.setProperty(bean1, "directField", String.class, config);
        boolean accessibilityAfterFirst = field.canAccess(bean1);

        // Second access with different bean
        config.setValue("value2");
        helper.setProperty(bean2, "directField", String.class, config);

And an `APIRoute` subclass to use that custom request class.

### Create a custom `GzipRequest` class { #create-a-custom-gziprequest-class }

/// tip

This is a toy example to demonstrate how it works, if you need Gzip support, you can use the provided [`GzipMiddleware`](../advanced/middleware.md#gzipmiddleware){.internal-link target=_blank}.

///

## Instalación { #installation }

Crea y activa un <a href="https://fastapi.tiangolo.com/es/virtual-environments/" class="external-link" target="_blank">entorno virtual</a> y luego instala FastAPI:

<div class="termy">

```console
$ pip install "fastapi[standard]"

---> 100%
```

</div>

        checkNotBinaryCompatibleJava(
            v1 = """
                public class Source {
                    public String foo() { return "bar"; }
                    public String[] baz() { return new String[] {"some"}; }
                }
            """,
            v2 = """
                public class Source {
                    @$nullUnmarkedAnnotationName public String foo() { return "bar"; }

            return when (methodJsonNode.get("name")?.asText()) {
                null -> None
                None::class.simpleName -> None
                TestDistribution::class.simpleName -> TestDistribution
                TestDistributionAlpine::class.simpleName -> TestDistributionAlpine
                TeamCityParallelTests::class.simpleName ->
                    TeamCityParallelTests(

WebSocketErrorModel: type[BaseModel] = create_model("WebSocket")


class FastAPIError(RuntimeError):
    """
    A generic, FastAPI-specific error.
    """


class DependencyScopeError(FastAPIError):
    """
    A dependency declared that it depends on another dependency with an invalid
    (narrower) scope.
    """


class ValidationException(Exception):
    def __init__(
        self,

* Puedes obtener metadatos del archivo subido.
* Tiene una interfaz `async` <a href="https://docs.python.org/3/glossary.html#term-file-like-object" class="external-link" target="_blank">parecida a un archivo</a>.
* Expone un objeto Python real <a href="https://docs.python.org/3/library/tempfile.html#tempfile.SpooledTemporaryFile" class="external-link" target="_blank">`SpooledTemporaryFile`</a> que puedes pasar directamente a otros paquetes que esperan un objeto parecido a un archivo.

        assertThrows(IllegalStateException.class, n1AdjacentNodes::size));
    assertNodeRemovedFromGraphErrorMessage(
        assertThrows(IllegalStateException.class, n1Predecessors::size));
    assertNodeRemovedFromGraphErrorMessage(
        assertThrows(IllegalStateException.class, n1Successors::size));
    assertNodeRemovedFromGraphErrorMessage(
        assertThrows(IllegalStateException.class, n1IncidentEdges::size));