def _is_json_field(field: ModelField) -> bool:
    return any(type(item) is Json for item in field.field_info.metadata)


def _get_multidict_value(
    field: ModelField, values: Mapping[str, Any], alias: str | None = None
) -> Any:
    alias = alias or get_validation_alias(field)
    if (
        (not _is_json_field(field))