code: function($super, key, value, properties) {
              $super(key, value, properties);
              switch(key) {
  
                  case 'chart.showLines':
                      this.showLines = (value === 'false');
                      this.mapper.mapValue((value === 'false') ? 0 : 1, ["plotOptions", "area", "lineWidth"]);
                      break;
                  default:
                      // no-op, ignore unsupported properties
                      break;
  
              }
          }
docs: override