anchor.diff:  
     Feature(this.name);
   
  -  Future execute(Worker worker, ResultBuffer buffer, Map<RegExp,Function> stepDefs, runTags) {
  +  Future execute(Worker worker, ResultBuffer buffer, Map<RegExp, Function> stepDefs, runTags) {
   
       if (doesTagsMatch(tags, runTags)) {
   
  
positive.code: 
    List<String> tags;
  
     Scenario background;
  
    List<Step> steps = [];
    GherkinTable examples = new GherkinTable();
  
negative.code:         Future.wait(results).whenComplete(() {
            buffer.write("Scenarios passed: $okScenariosCount", color: 'green');
  
            if (koScenariosCount > 0) {
              buffer.write("Scenarios failed: $koScenariosCount", color: 'red');
            }
  
  