Arguments for the
The point index in the series.
Applicable only to the Pie, Donut, and Funnel series.
An object containing the series configuration.
The interface of this property is unstable and might change for the 1.0 release.
The index of the series in the parent Chart.
The text of the legend item.
true if the event was prevented
by any of its subscribers.
true if the default action has been prevented,
If called, the series visibility is not toggled as a result of clicking the legend item.