):
    return {"p": p}


class FormModelOptionalListAlias(BaseModel):
    p: Optional[list[str]] = Field(None, alias="p_alias")


@app.post("/model-optional-list-alias", operation_id="model_optional_list_alias")
async def read_model_optional_list_alias(
    p: Annotated[FormModelOptionalListAlias, Form()],
):
    return {"p": p.p}


@pytest.mark.parametrize(
    "path",