AsUnion

AsUnion returns a [CustomChartsSectionChartsSeriesMetricDefinitionUnion] interface which you can cast to the specific types for more type safety.

Possible runtime types of the union are [CustomChartsSectionChartsSeriesMetricDefinitionCustomChartMetricCount], [CustomChartsSectionChartsSeriesMetricDefinitionCustomChartMetricScalar], [CustomChartsSectionChartsSeriesMetricDefinitionCustomChartMetricPercentile], [CustomChartsSectionChartsSeriesMetricDefinitionCustomChartMetricRatioOutput].