* @return an optional containing the path to the project, or empty if not specified
     */
    @Nonnull
    Optional<Path> getPath();

    /**
     * Gets the source of the project to build.
     * This is an alternative to specifying a path, allowing the project to be built from
     * a model source such as a string or input stream.
     *
     * @return an optional containing the source of the project, or empty if not specified
     */

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### Alternatieve API documentatie upgrade

Ga vervolgens naar <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>.

* De alternatieve documentatie zal ook de nieuwe queryparameter en body weergeven:

![ReDoc](https://fastapi.tiangolo.com/img/index/index-06-redoc-02.png)

# Custom Request and APIRoute class { #custom-request-and-apiroute-class }

In some cases, you may want to override the logic used by the `Request` and `APIRoute` classes.

In particular, this may be a good alternative to logic in a middleware.

For example, if you want to read or manipulate the request body before it is processed by your application.

/// danger

This is an "advanced" feature.

Der Parameter `lifespan` der `FastAPI`-App benötigt einen **asynchronen Kontextmanager**, wir können ihm also unseren neuen asynchronen Kontextmanager `lifespan` übergeben.

{* ../../docs_src/events/tutorial003.py hl[22] *}

## Alternative Events (deprecated)

/// warning | Achtung

![Swagger UI interaction](https://fastapi.tiangolo.com/img/index/index-05-swagger-04.png)

### Plus loin avec la documentation API alternative

Et maintenant, rendez-vous sur <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>.

* La documentation alternative reflétera également le nouveau paramètre de requête et le nouveau corps :

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-01-swagger-ui-simple.png)

### Dokumentasi API alternatif

Kemudian kunjungi <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>.

Anda akan melihat dokumentasi alternatif otomatis (dibuat oleh <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a>):

/**
 * Helper class for managing related query configurations.
 * This class provides functionality to load, cache, and retrieve related queries
 * based on search terms and virtual hosts. Related queries are used to suggest
 * alternative or supplementary search terms to improve search results.
 */
public class RelatedQueryHelper extends AbstractConfigHelper {
    private static final Logger logger = LogManager.getLogger(RelatedQueryHelper.class);

    /**

 * ExecutionException}, the exception's {@linkplain #getCause() cause} comes from a failed task,
 * possibly run in another thread.
 *
 * <p>{@code UncheckedExecutionException} is intended as an alternative to {@code
 * ExecutionException} when the exception thrown by a task is an unchecked exception. However, it
 * may also wrap a checked exception in some cases.
 *

        /*
         * NOTE: This provides backward-compat with maven-deploy-plugin:2.4 which bypasses the repository factory when
         * using an alternative deployment location.
         */
        if (deploymentRepository instanceof DefaultArtifactRepository
                && deploymentRepository.getAuthentication() == null) {

![Swagger UI](https://fastapi.tiangolo.com/img/index/index-01-swagger-ui-simple.png)

### Dokumen API alternatif

Dan sekarang, kunjungi <a href="http://127.0.0.1:8000/redoc" class="external-link" target="_blank">http://127.0.0.1:8000/redoc</a>.

Anda akan melihat dokumentasi alternatif otomatis (dibuat oleh <a href="https://github.com/Rebilly/ReDoc" class="external-link" target="_blank">ReDoc</a>):