anchor.diff:  import 'utils.dart';
   
   TypeHelperCtx typeHelperContext(
  -        HelperCore helperCore, FieldElement fieldElement) =>
  +  HelperCore helperCore,
  +  FieldElement fieldElement,
  +) =>
       TypeHelperCtx._(helperCore, fieldElement);
   
   class TypeHelperCtx
  
positive.code:   @override
    ClassConfig get config => _helperCore.config;
  
    TypeHelperCtx._(this._helperCore, this.fieldElement);
  
    @override
    ConvertData? get serializeConvertData => _pairFromContext.toJson;
  
  
negative.code:   ConvertData? get deserializeConvertData => _pairFromContext.fromJson;
  
    late final _pairFromContext = _ConvertPair(fieldElement);
  
    TypeHelperCtx._(this._helperCore, this.fieldElement);
  
    @override
    void addMember(String memberContent) {
  