{* ../../docs_src/custom_response/tutorial009c_py310.py hl[9:14,17] *}

Maintenant, au lieu de renvoyer :

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

... cette réponse renverra :

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

Bien sûr, vous trouverez probablement des moyens bien meilleurs de tirer parti de cela que de formater du JSON. 😉

   * value} before proceeding with the {@link #put} operation. If the bimap previously contained the
   * provided key-value mapping, this method has no effect.
   *
   * <p>Note that a successful call to this method could cause the size of the bimap to increase by
   * one, stay the same, or even decrease by one.
   *
   * <p><b>Warning:</b> If an existing entry with this value is removed, the key for that entry is
   * discarded and not returned.

     *
     * @throws Exception
     */
    public void testEncodeDecode_RoundTrip() throws Exception {
        // Test with ASCII text
        final String text = "Hello, World!";
        final byte[] textBytes = text.getBytes("UTF-8");
        final String encoded = Base64Util.encode(textBytes);
        final byte[] decoded = Base64Util.decode(encoded);

            Optional<MavenProject> optSelectedProject =
                    findOptionalProjectBySelector(projects, baseDirectory, selector);
            if (!optSelectedProject.isPresent()) {
                String message = "Could not find the selected project in the reactor: " + selector;
                throw new MavenExecutionException(message, request.getPom());
            }

            MavenProject selectedProject = optSelectedProject.get();

    // fully populated Plugin objects, including executions with goals and default configuration taken
    // from the plugin.xml inside a plugin.
    //
    // TODO This whole method could probably removed by injecting lifeCyclePluginAnalyzer straight into client site.
    // TODO But for some reason the whole plexus appcontext refuses to start when I try this.

    @Override

    If you need a refresher about when to use which, check out the section _"In a hurry?"_ in the docs about [`async` and `await`](../async.md#in-a-hurry).

9. This *path operation function* is not returning dataclasses (although it could), but a list of dictionaries with internal data.

    FastAPI will use the `response_model` parameter (that includes dataclasses) to convert the response.

{* ../../docs_src/custom_response/tutorial009c_py310.py hl[9:14,17] *}

이제 다음 대신:

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

...이 응답은 이렇게 반환됩니다:

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

물론 JSON 포맷팅보다 더 유용하게 활용할 방법을 찾을 수 있을 것입니다. 😉

### `orjson` 또는 응답 모델 { #orjson-or-response-model }

        // Test with a long message
        String message = "This is a very long error message that describes in detail why the job was not found. "
                + "The job with identifier XYZ123 was expected to be in the system but could not be located "
                + "after searching through all available job registries and scheduled task databases.";

        JobNotFoundException exception = new JobNotFoundException(message);

    this.delegate = delegate;
  }

  @Override
  protected Map<Class<? extends B>, B> delegate() {
    return delegate;
  }

  @Override
  @SuppressWarnings("unchecked") // value could not get in if not a T
  public <T extends B> @Nullable T getInstance(Class<T> type) {
    return (T) delegate.get(checkNotNull(type));
  }

  /**
   * Guaranteed to throw an exception and leave the map unmodified.

                pw.println("---------- Validation Report -----------");
                pw.println("Some API names were found that, when client code is generated for these APIS,");
                pw.println("could conflict with the reserved words in some programming languages. It may");
                pw.println("still be possible to use these API names, but you will need to verify whether");