anchor.diff:          
           _currentHintElements[e] = prevHint = _createHint(e,distance) ;
           //Distance hint in px
  -        distance += 24 ;
  +        distance += e.hintHeight ;
         }
         hintsMap[e] = prevHint ;
       }
  
positive.code:     return _data.hint != null ;
    }
    
  }
  
  class XChartsElementDetail extends XChartsElement {
  
negative.code:   String _labelX ;
    String _labelY ;
    String hint ;
    int _hintHeight ;
    
    String get labelX => _labelX != null ? _labelX : valueX.toString() ;
    String get labelY => _labelY != null ? _labelY : valueY.toString() ;
  