fun invalidatesCache(method: String): Boolean =
    (
      method == "POST" ||
        method == "PATCH" ||
        method == "PUT" ||
        method == "DELETE" ||
        method == "MOVE"
    )

  @JvmStatic // Despite being 'internal', this method is called by popular 3rd party SDKs.
  fun requiresRequestBody(method: String): Boolean =
    (

# Generando SDKs { #generating-sdks }

Como **FastAPI** está basado en la especificación **OpenAPI**, sus APIs se pueden describir en un formato estándar que muchas herramientas entienden.

Esto facilita generar **documentación** actualizada, paquetes de cliente (<abbr title="Software Development Kits – Kits de Desarrollo de Software">**SDKs**</abbr>) en múltiples lenguajes y **escribir pruebas** o **flujos de automatización** que se mantengan sincronizados con tu código.

# Generating SDKs { #generating-sdks }

Because **FastAPI** is based on the **OpenAPI** specification, its APIs can be described in a standard format that many tools understand.

This makes it easy to generate up-to-date **documentation**, client libraries (<abbr title="Software Development Kits">**SDKs**</abbr>) in multiple languages, and **testing** or **automation workflows** that stay in sync with your code.

## No Separar Esquemas { #do-not-separate-schemas }

Ahora, hay algunos casos donde podrías querer tener el **mismo esquema para entrada y salida**.

## Do not Separate Schemas { #do-not-separate-schemas }

Now, there are some cases where you might want to have the **same schema for input and output**.

There are multiple tools that you can use to create those dependables, and they get integrated into OpenAPI so they are shown in the automatic docs UI, they can be used by automatically generated clients and SDKs, etc.

You can import them from `fastapi.security`:

```python
from fastapi.security import (
    APIKeyCookie,
    APIKeyHeader,
    APIKeyQuery,
    HTTPAuthorizationCredentials,
    HTTPBasic,

import java.security.cert.X509Certificate;

import static org.junit.Assert.assertEquals;
import static org.junit.Assert.assertTrue;

/**
 * Simple test adaptable to show a failure in older versions of OkHttp
 * or Android SDKs.
 */
@RunWith(AndroidJUnit4.class)
public class IssueReproductionTest {
  @Test public void getFailsWithoutAdditionalCert() throws IOException {
    OkHttpClient client = new OkHttpClient();

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Der Hauptanwendungsfall hierfür besteht wahrscheinlich darin, dass Sie das mal tun möchten, wenn Sie bereits über einige automatisch generierte Client-Codes/SDKs verfügen und im Moment nicht alle automatisch generierten Client-Codes/SDKs aktualisieren möchten, möglicherweise später, aber nicht jetzt.

In diesem Fall können Sie diese Funktion in **FastAPI** mit dem Parameter `separate_input_output_schemas=False` deaktivieren.

# SDKs generieren { #generating-sdks }

Da **FastAPI** auf der **OpenAPI**-Spezifikation basiert, können dessen APIs in einem standardisierten Format beschrieben werden, das viele Tools verstehen.