anchor.diff:        );
         expect(
           entry.toJson(),
  -        {
  +        const {
             'id': 'foo',
             'title': 'foo',
             'content': 'foo',
  
positive.code:         id: 3,
          name: 'Username',
          isAwesome: true,
          profilePicture: Uint8List.fromList([1, 2, 3, 4]),
          creationTime: DateTime.now(),
        );
  
  
negative.code:       expect(serializer.fromJson<double?>(3), 3.0);
        expect(serializer.fromJson<DateTime?>(0),
            DateTime.fromMillisecondsSinceEpoch(0));
        expect(serializer.fromJson<Uint8List?>(const [0, 1]), const [0, 1]);
      });
  
      test('can be overridden globally', () {
  