///

## Type Hints met Metadata Annotaties

Python heeft ook een functie waarmee je **extra <abbr title="Data over de data, in dit geval informatie over het type, bijvoorbeeld een beschrijving.">metadata</abbr>** in deze type hints kunt toevoegen met behulp van `Annotated`.

//// tab | Python 3.9+

In Python 3.9 is `Annotated` onderdeel van de standaardpakket, dus je kunt het importeren vanuit `typing`.

### Getest

* 100% <abbr title="De hoeveelheid code die automatisch wordt getest">van de code is getest</abbr>.
* 100% <abbr title="Python type annotaties, hiermee kunnen je editor en externe tools je beter ondersteunen">type geannoteerde</abbr> codebase.
* Wordt gebruikt in productietoepassingen.

## Starlette functies

		if err != nil {
			t.Fatal(err)
		}
		if p.Annotations[annotation.AmbientRedirection.Name] == constants.AmbientRedirectionEnabled {
			return
		}
		time.Sleep(1 * time.Second)
	}
	t.Fatal("Pod not annotated")
}

func assertPodNotAnnotated(t *testing.T, client kube.Client, pod *corev1.Pod) {
	for i := 0; i < 5; i++ {

          <option value="io.reactivex.annotations.Beta" />
          <option value="io.reactivex.annotations.Experimental" />
          <option value="org.apache.http.annotation.Beta" />
          <option value="org.gradle.api.Incubating" />
          <option value="org.jetbrains.annotations.ApiStatus.Experimental" />
          <option value="rx.annotations.Beta" />
          <option value="rx.annotations.Experimental" />
        </set>

		if ns == nil {
			return fmt.Errorf("failed to find namespace %v", ns)
		}
		wasAnnotated := oldPod.Annotations != nil && oldPod.Annotations[annotation.AmbientRedirection.Name] == constants.AmbientRedirectionEnabled
		isAnnotated := newPod.Annotations != nil && newPod.Annotations[annotation.AmbientRedirection.Name] == constants.AmbientRedirectionEnabled
		shouldBeEnabled := util.PodRedirectionEnabled(ns, newPod)

        repository?.close()
    }

    def "each new #apiElement requires a @Incubating annotation"() {
        given:
        JApiCompatibility jApiType = getProperty(jApiTypeName)
        def rule = withContext(new IncubatingMissingRule([:]))
        def annotations = []
        jApiType.annotations >> annotations

        when:
        annotations.clear()

        then:

This simple case is handled automatically by FastAPI because the return type annotation is the class (or a subclass of) `Response`.

And tools will also be happy because both `RedirectResponse` and `JSONResponse` are subclasses of `Response`, so the type annotation is correct.

### Annotate a Response Subclass

You can also use a subclass of `Response` in the type annotation:

```Python hl_lines="8-9"

      if (annotations == null) {
        annotations = new ArrayList<>();
        for (Annotation a : classOrMethod.getDeclaredAnnotations()) {
          if (a.annotationType().isAnnotationPresent(TesterAnnotation.class)) {
            annotations.add(a);
          }
        }
        annotations = unmodifiableList(annotations);
        annotationCache.put(classOrMethod, annotations);
      }
      return annotations;
    }
  }

	pod.Spec.Containers = []corev1.Container{app, proxy}
	pod.ObjectMeta.Annotations = map[string]string{annotation.SidecarStatus.Name: "true"}
	ns.ObjectMeta.Labels = map[string]string{label.IoIstioDataplaneMode.Name: constants.DataplaneModeAmbient}

	testDoAddRun(t, cniConf, testNSName, pod, ns)

	wasCalled := serverClose()
	// Pod has sidecar annotation from injector, should not be added to mesh
	assert.Equal(t, wasCalled, false)
}

            default=param.default,
            annotation=get_typed_annotation(param.annotation, globalns),
        )
        for param in signature.parameters.values()
    ]
    typed_signature = inspect.Signature(typed_params)
    return typed_signature


def get_typed_annotation(annotation: Any, globalns: Dict[str, Any]) -> Any:
    if isinstance(annotation, str):
        annotation = ForwardRef(annotation)