createRenderer method
Create the stacked area series renderer.
Implementation
@override
StepLineSeriesRenderer<T, D> createRenderer() {
StepLineSeriesRenderer<T, D> stepLineSeriesRenderer;
if (onCreateRenderer != null) {
stepLineSeriesRenderer =
onCreateRenderer!(this) as StepLineSeriesRenderer<T, D>;
return stepLineSeriesRenderer;
}
return StepLineSeriesRenderer<T, D>();
}