client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [
        ("/items", None, 200, {"X-Token values": None}),
        ("/items", {"x-token": "foo"}, 200, {"X-Token values": ["foo"]}),
        # TODO: fix this, is it a bug?

    "bar": {"id": "bar", "title": "Bar", "description": "The bartenders"},
}

app = FastAPI()


class Item(BaseModel):
    id: str
    title: str
    description: str | None = None


@app.get("/items/{item_id}", response_model=Item)
async def read_main(item_id: str, x_token: Annotated[str, Header()]):
    if x_token != fake_secret_token:

		{xForwardedFor, "", ""},                                                       // None
		{xRealIP, "8.8.8.8", "8.8.8.8"},                                               // Single address
		{xRealIP, "[2001:db8:cafe::17]:4711", "[2001:db8:cafe::17]"},                  // IPv6 address
		{xRealIP, "", ""},                                                             // None
		{forwarded, `for="_gazonk"`, "_gazonk"},                                       // Hostname

                {"name": "Holy Buddies", "description": None},
            ],
        },
        {
            "name": "System of an Up",
            "items": [
                {
                    "name": "Salt",
                    "description": "The kombucha mushroom people's favorite",
                },
                {"name": "Pad Thai", "description": None},
                {
                    "name": "Lonely Night",

  // IfNeeded: the webhook will be called at least one additional time as part of the admission evaluation
  // if the object being admitted is modified by other admission plugins after the initial webhook call.
  // Webhooks that specify this option *must* be idempotent, able to process objects they previously admitted.
  // Note:
  // * the number of additional invocations is not guaranteed to be exactly one.

    client = TestClient(app)
    return client


@needs_py310
@pytest.mark.parametrize(
    "path,headers,expected_status,expected_response",
    [
        ("/items", None, 200, {"X-Token values": None}),
        ("/items", {"x-token": "foo"}, 200, {"X-Token values": ["foo"]}),
        # TODO: fix this, is it a bug?

    # o procedureSynonymHandlingType: (NotRequired - Default NONE)
    #  You can specify the handling type of procedure synonym.
    #   NONE - No handling. (default)
    #   INCLUDE - It includes procedure synonyms.
    #   SWITCH - It switches all normal procedures to procedure synonyms.
    #
    #; procedureSynonymHandlingType = NONE
    # - - - - - - - - - -/

```

🚥 👆 💚 ❎ 🗄 🔗 🍕 👆 💪 ⚒ `openapi_url=None`, 👈 🔜 ❎ 🧾 👩‍💻 🔢 👈 ⚙️ ⚫️.

## 🩺 📛

👆 💪 🔗 2️⃣ 🧾 👩‍💻 🔢 🔌:

* **🦁 🎚**: 🍦 `/docs`.
    * 👆 💪 ⚒ 🚮 📛 ⏮️ 🔢 `docs_url`.
    * 👆 💪 ❎ ⚫️ ⚒ `docs_url=None`.
* **📄**: 🍦 `/redoc`.
    * 👆 💪 ⚒ 🚮 📛 ⏮️ 🔢 `redoc_url`.
    * 👆 💪 ❎ ⚫️ ⚒ `redoc_url=None`.

🖼, ⚒ 🦁 🎚 🍦 `/documentation` & ❎ 📄:

* Se o parâmetro é declarado como um **modelo Pydantic**, será interpretado como o **corpo** da requisição.

/// note | "Observação"

O FastAPI saberá que o valor de `q` não é obrigatório por causa do valor padrão `= None`.

O `Union` em `Union[str, None]` não é utilizado pelo FastAPI, mas permite ao seu editor de texto lhe dar um suporte melhor e detectar erros.

///

## Sem o Pydantic

* Wenn der Parameter vom Typ eines **Pydantic-Modells** ist, wird er als Request**body** interpretiert.

/// note | "Hinweis"

FastAPI weiß, dass der Wert von `q` nicht erforderlich ist, wegen des definierten Defaultwertes `= None`

Das `Union` in `Union[str, None]` wird von FastAPI nicht verwendet, aber es erlaubt Ihrem Editor, Sie besser zu unterstützen und Fehler zu erkennen.

///

## Ohne Pydantic