q: Annotated[
        Union[str, None],
        Query(
            title="Query string",
            description="Query string for the items to search in the database that have a good match",
            min_length=3,
        ),
    ] = None,
):
    results = {"items": [{"item_id": "Foo"}, {"item_id": "Bar"}]}
    if q:
        results.update({"q": q})

    contact: Optional[Contact] = None
    license: Optional[License] = None
    version: str


class ServerVariable(BaseModelWithConfig):
    enum: Annotated[Optional[List[str]], Field(min_length=1)] = None
    default: str
    description: Optional[str] = None


class Server(BaseModelWithConfig):
    url: Union[AnyUrl, str]
    description: Optional[str] = None