anchor.diff:    // Load the input and the flakiness data if specified.
     final before = await loadResultsMap(parameters[0]);
     final after = await loadResultsMap(parameters[1]);
  -  final approved = 3 <= parameters.length
  -      ? await loadResultsMap(parameters[2])
  -      : <String, Map<String, dynamic>>{};
     final logs = options['logs'] == null
         ? <String, Map<String, dynamic>>{}
         : await loadResultsMap(options['logs']);
  
positive.code: bool search(
      String description,
      String searchForStatus,
      String searchForApproval,
      List<Event> events,
      ArgResults options,
      Map<String, Map<String, dynamic>> logs,
  
negative.code:   }
  
    final parameters = options.rest;
    if (parameters.length != 2) {
      print("error: Expected two parameters "
          "(results before, results after)");
      exitCode = 2;
      return;
    }
  