func (
r CustomChartsSectionChartsSeriesGroupByDefinition) AsUnion(
) CustomChartsSectionChartsSeriesGroupByDefinitionsUnionAsUnion returns a [CustomChartsSectionChartsSeriesGroupByDefinitionsUnion].
AsUnion returns a [CustomChartsSectionChartsSeriesGroupByDefinitionsUnion] interface which you can cast to the specific types for more type safety.
Possible runtime types of the union are [CustomChartsSectionChartsSeriesGroupByDefinitionsCustomChartGroupByPlain], [CustomChartsSectionChartsSeriesGroupByDefinitionsCustomChartGroupByComplex].