internal ChartColumnType EvaluateColumnType(IReportScopeInstance reportScopeInstance, OnDemandProcessingContext context)
 {
     context.SetupContext(m_chart, reportScopeInstance);
     return(EnumTranslator.TranslateChartColumnType(context.ReportRuntime.EvaluateChartLegendColumnColumnTypeExpression(this, m_chart.Name), context.ReportRuntime));
 }