*/
    public static final int EDIT = 2;

    /**
     * Mode for deleting a record.
     */
    public static final int DELETE = 3;

    /**
     * Mode for viewing record details.
     */
    public static final int DETAILS = 4;

    /**
     * Protected constructor to prevent instantiation.
     */
    protected CrudMode() {
        // nothing
    }

```

Et comme vous utilisez `StaticFiles`, ce fichier CSS est servi automatiquement par votre application **FastAPI** à l’URL `/static/styles.css`.

## En savoir plus { #more-details }

     *
     * @param crudMode the CRUD mode for the operation
     * @param id the ID of the related query item to display
     * @return HTML response for the details page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse details(final int crudMode, final String id) {
        verifyCrudMode(crudMode, CrudMode.DETAILS, this::asListHtml);
        saveToken();

With `openapi_examples` added to `Body()` the `/docs` would look like:

<img src="/img/tutorial/body-fields/image02.png">

## Technical Details { #technical-details }

/// tip

If you are already using **FastAPI** version **0.99.0 or above**, you can probably **skip** these details.

They are more relevant for older versions, before OpenAPI 3.1.0 was available.

app = FastAPI()


def write_notification(email: str, message=""):
    with open("log.txt", mode="w") as email_file:
        content = f"notification for {email}: {message}"
        email_file.write(content)


@app.post("/send-notification/{email}")
async def send_notification(email: str, background_tasks: BackgroundTasks):
    background_tasks.add_task(write_notification, email, message="some notification")

  }

  /**
   * Computes or retrieves the values corresponding to {@code keys}. This method is called by {@link
   * LoadingCache#getAll}.
   *
   * <p>If the returned map doesn't contain all requested {@code keys} then the entries it does
   * contain will be cached, but {@code getAll} will throw an exception. If the returned map
   * contains extra keys not present in {@code keys} then all returned entries will be cached, but

| `license_info` | `dict` | Die Lizenzinformationen für die freigegebene API. Kann mehrere Felder enthalten. <details><summary><code>license_info</code>-Felder</summary><table><thead><tr><th>Parameter</th><th>Typ</th...

| `license_info` | `dict` | La información de la licencia para la API expuesta. Puede contener varios campos. <details><summary><code>license_info</code> fields</summary><table><thead><tr><th>Parámetro</...

```Python
contents = myfile.file.read()
```

/// note | `async` Technical Details

When you use the `async` methods, **FastAPI** runs the file methods in a threadpool and awaits for them.

///

/// note | Starlette Technical Details

     *
     * @param crudMode the CRUD mode
     * @param id the file authentication ID
     * @return HTML response for the details page
     */
    @Execute
    @Secured({ ROLE, ROLE + VIEW })
    public HtmlResponse details(final int crudMode, final String id) {
        verifyCrudMode(crudMode, CrudMode.DETAILS, this::asListHtml);
        saveToken();