anchor.diff:    'iterable',
     'dateTimeList',
     'crazyComplex',
  -  generatedLocalVarName
  +  _generatedLocalVarName
   ];
  
positive.code: 
  import 'kitchen_sink_interface.dart';
  import 'strict_keys_object.dart';
  
  final _isATypeError = const TypeMatcher<TypeError>();
  
  
negative.code: import 'package:test/test.dart';
  
  import 'package:json_annotation/json_annotation.dart';
  import 'package:yaml/yaml.dart';
  
  import '../test_utils.dart';
  