field_info=field_info,
        )
        if is_path_param:
            assert is_scalar_field(field=field), (
                "Path params must be of one of the supported types"
            )
        elif isinstance(field_info, params.Query):
            assert (
                is_scalar_field(field)
                or field_annotation_is_scalar_sequence(field.field_info.annotation)

    # DefsRef, although DefsRef is just str:
    # DefsRef = NewType('DefsRef', str)
    # So, a cast to simplify the types here
    return field_mapping, cast(dict[str, dict[str, Any]], definitions)


def is_scalar_field(field: ModelField) -> bool:
    from fastapi import params

    return shared.field_annotation_is_scalar(
        field.field_info.annotation
    ) and not isinstance(field.field_info, params.Body)