*   ...))`
     *
     * So it makes sense for the parameter (and thus the return type) to be @Nullable.
     *
     * Two other points:
     *
     * 1. We'll want to use something like @PolyNull once we can make that work for the various
     * platforms we target.
     *
     * 2. Kotlin's Map type has a getOrDefault method that accepts and returns a "plain V," in

Но оно будет обработано `unicorn_exception_handler`.

Таким образом, вы получите чистую ошибку с кодом состояния HTTP `418` и содержимым JSON:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | Технические детали

Также можно использовать `from starlette.requests import Request` и `from starlette.responses import JSONResponse`.

///

### `examples` avec Pydantic et FastAPI { #pydantic-and-fastapi-examples }

Lorsque vous ajoutez `examples` dans un modèle Pydantic, en utilisant `schema_extra` ou `Field(examples=["something"])`, cet exemple est ajouté au **JSON Schema** de ce modèle Pydantic.

Et ce **JSON Schema** du modèle Pydantic est inclus dans l'**OpenAPI** de votre API, puis il est utilisé dans l'interface de la documentation.

///

### `examples` de Pydantic y FastAPI { #pydantic-and-fastapi-examples }

Cuando añades `examples` dentro de un modelo de Pydantic, usando `schema_extra` o `Field(examples=["something"])`, ese ejemplo se añade al **JSON Schema** para ese modelo de Pydantic.

Y ese **JSON Schema** del modelo de Pydantic se incluye en el **OpenAPI** de tu API, y luego se usa en la interfaz de documentación.

///

### `examples` no Pydantic e no FastAPI { #pydantic-and-fastapi-examples }

Quando você adiciona `examples` dentro de um modelo Pydantic, usando `schema_extra` ou `Field(examples=["something"])`, esse exemplo é adicionado ao **JSON Schema** para esse modelo Pydantic.

E esse **JSON Schema** do modelo Pydantic é incluído no **OpenAPI** da sua API e, então, é usado na UI da documentação.

Aber diese wird von `unicorn_exception_handler` gehandhabt.

Sie erhalten also einen sauberen Fehler mit einem HTTP-Statuscode von `418` und dem JSON-Inhalt:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | Technische Details

Sie könnten auch `from starlette.requests import Request` und `from starlette.responses import JSONResponse` verwenden.

    it under certain conditions; type `show c' for details.

The hypothetical commands `show w' and `show c' should show the
appropriate parts of the General Public License. Of course, the commands
you use may be called something other than `show w' and `show c'; they
could even be mouse-clicks or menu items--whatever suits your program.

You should also get your employer (if you work as a programmer) or your

func (c *Connection) handleMessages(ctx context.Context, conn net.Conn) {
	c.updateState(StateConnected)
	ctx, cancel := context.WithCancelCause(ctx)
	defer cancel(ErrDisconnected)

	// This will ensure that is something asks to disconnect and we are blocked on reads/writes
	// the connection will be closed and readers/writers will unblock.
	go c.monitorState(conn, cancel)

	c.handleMsgWg.Add(2)
	c.reconnectMu.Unlock()

Але вона буде оброблена функцією-обробником `unicorn_exception_handler`.

Отже, ви отримаєте зрозумілу помилку з кодом статусу HTTP `418` і JSON-вмістом:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | Технічні деталі

Ви також можете використовувати `from starlette.requests import Request` і `from starlette.responses import JSONResponse`.

Namun bu, `unicorn_exception_handler` tarafından handle edilir.

Böylece HTTP status code’u `418` olan, JSON içeriği şu şekilde temiz bir hata response’u alırsınız:

```JSON
{"message": "Oops! yolo did something. There goes a rainbow..."}
```

/// note | Teknik Detaylar

`from starlette.requests import Request` ve `from starlette.responses import JSONResponse` da kullanabilirsiniz.