code: function($super, rawData, fieldInfo, properties) {
              // at the moment disabling "total count" mode, need a more sophisticated way to handle it
              if(false && rawData.series['_tc'] && rawData.series['_tc'].length > 0) {
                  this.useTotalCount = true;
                  this.totalCount = parseInt(rawData.series['_tc'][0].rawY, 10);
              }
              else {
                  this.useTotalCount = false;
              }
              $super(rawData, fieldInfo, properties);
          }
docs: override