anchor.diff:        return;
       }
   
  -    ga?.sendEvent('execution', 'initiated');
  +    _executionButtonCount++;
  +    ga?.sendEvent('execution', 'initiated', label: '$_executionButtonCount');
   
       editorIsBusy = true;
       testResultBox.hide();
  
positive.code:     }
  
      if (tabName == 'solution') {
        _userHasSeenSolution = true;
      }
  
  
negative.code:         tabController.selectTab('solution', force: true);
        });
        hintBox.showElements([hintElement, showSolutionButton]);
        ga?.sendEvent('view', 'hint');
      })
        ..hidden = true;
  
  