private void updateUsedColumns()
 {
     if (Chart == null)
     {
         return;
     }
     _dataBrowserPresenter.InitializeIsUsedForDataColumns(Chart.UsedColumns);
 }
        private void updateUsedColumns()
        {
            if (Chart == null)
            {
                return;
            }
            _dataBrowserPresenter.InitializeIsUsedForDataColumns(Chart.UsedColumns);

            //Once used columns are updated, we need to make sure we update the meta data related to used column as well
            refreshColorGroupingPresenter();
        }