anchor.diff:        var stopwatch = new Stopwatch()..start();
   
         // Initialize query specific objects
  -      TestMapper mapper = new TestMapper(new SessionLdapMapper(), file.path);
  +      TestMapper mapper = new TestMapper(new CompletionMapper(), file.path);
   
         // Extraction
         await mapper.init({}, (String key, value) {
  
positive.code:   print('----- reducing');
  
    // Initialize query specific objects
    var reducer = sessionLdapReducer;
    var reductionMerge = sessionLdapReductionMerge;
  
    // Reduce the information into two separate result maps
    var reduced1 = <String, dynamic>{};
  
negative.code: import 'dart:convert';
  import 'dart:io' as io;
  
  import 'package:path/path.dart';
  import 'package:sintr_worker_lib/instrumentation_transformer.dart';
  import 'package:sintr_worker_lib/query.dart';
  import 'package:sintr_worker_lib/query/completion_metrics.dart';
  import 'package:sintr_worker_lib/query/exceptions.dart';
  import 'package:sintr_worker_lib/session_info.dart';
  
  main(List<String> args) async {
  