code: function($super, key, value, properties) {
              $super(key, value, properties);
              switch(key) {
  
                  case 'chart.markerSize':
                      this.mapMarkerSize(value);
                      break;
                  case 'primaryAxis.scale':
                      if(!properties['axisX.scale']) {
                          this.logXAxis = (value === 'log');
                      }
                      break;
                  case 'axisX.scale':
                      this.logXAxis = (value === 'log');
                      break;
                  default:
                      // no-op, ignore unsupported properties
                      break;
              }
          }
docs: override