Union[str, None],
        Doc(
            """
            'Blacklist' validation step. The vanilla parameter field will be the
            single one of the alias' or set of aliases' fields and all the other
            fields will be ignored at serialization time.
            """
        ),
    ] = None,
    title: Annotated[
        Optional[str],
        Doc(
            """

            if security_definitions:
                security_schemes.update(security_definitions)
            all_route_params = get_flat_params(route.dependant)
            operation_parameters = get_openapi_operation_parameters(
                all_route_params=all_route_params,
                schema_generator=schema_generator,
                model_name_map=model_name_map,

            and not is_dataclass(field.type_)
            and not isinstance(field_info, params.Body)
        ):
            return False
        if field.sub_fields:  # type: ignore[attr-defined]
            if not all(
                is_pv1_scalar_field(f)
                for f in field.sub_fields  # type: ignore[attr-defined]
            ):
                return False
        return True