The context for the legend item visual function.
Indicates if the legend item is active.
The item is inactive when the associated point or series in not visible.
createVisual () => Element
A function that can be used to get the default visual.
The legend item options.
The index of the point in the series.
Available for the Donut, Pie, and Funnel series.
The instance of the Chart component.
The item series.