* advantage of <a
   * href="https://docs.oracle.com/javase/tutorial/java/generics/genTypeInference.html#type-inference-instantiation">"diamond"
   * syntax</a>.
   */
  @GwtCompatible(serializable = true)
  @SuppressWarnings("NonApiType") // acts as a direct substitute for a constructor call
  public static <E extends @Nullable Object> ArrayList<E> newArrayList() {

    }

    /**
     * Append formatted content to the buffer.
     * @see String#format(String, Object...)
     *
     * @param pattern a <a href="../util/Formatter.html#syntax">format string</a>
     * @param args arguments referenced by the format specifiers in the format string
     * @return the current builder
     */
    @Nonnull

      boilerplate notice, with the fields enclosed by brackets "[]"
      replaced with your own identifying information. (Don't include
      the brackets!)  The text should be enclosed in the appropriate
      comment syntax for the file format. We also recommend that a
      file or class name and description of purpose be included on the
      same "printed page" as the copyright notice for easier
      identification within third-party archives.

                                  description: '[RE2 style regex-based match](https://github.com/google/re2/wiki/Syntax).'
                                  type: string
                              type: object
                            description: withoutHeader has the same syntax with the
                              header, but has opposite meaning.
                            type: object

### Recap

In summary, you declare **once** the types of parameters, body, etc. as function parameters.

You do that with standard modern Python types.

You don't have to learn a new syntax, the methods or classes of a specific library, etc.

Just standard **Python**.

For example, for an `int`:

```Python
item_id: int
```

or for a more complex `Item` model:

```Python

* 📝 Update includes in `docs/en/docs/advanced/behind-a-proxy.md`. PR [#12583](https://github.com/fastapi/fastapi/pull/12583) by [@imjuanleonard](https://github.com/imjuanleonard).
* 📝 Update includes syntax for `docs/pl/docs/tutorial/first-steps.md`. PR [#12584](https://github.com/fastapi/fastapi/pull/12584) by [@sebkozlo](https://github.com/sebkozlo).

* déclarer le paramètre de requête `q` sans `Query` ni valeur par défaut
* déclarer le paramètre de chemin `item_id` en utilisant `Path`
* les avoir dans un ordre différent
* ne pas utiliser `Annotated`

...Python a une petite syntaxe spéciale pour cela.

Passez `*`, comme premier paramètre de la fonction.