flutter_custom_amplify_query.dart

@MappableRecord()
typedef Shop = ({
  String id,
  String name,
  DateTime createdAt,
  String address,
});

final res = await Amplify.API
                              .query(
                                request: GraphQLRequest(
                                  document: '''query GetShop(\$id: ID!) {
  getShop(id: \$id) {
    id
    name
    createdAt
    address
  }
}''',
                                  variables: <String, String>{'id': '637428c2-a001-70c6-8c8f-51f888538d1b'},
                                ),
                              )
                              .response;
                          final shop = ShopMapper.fromMap(jsonDecode(res.data)["getShop"]);