A class that defines the style for a Pie Chart.
The color of the border around the pie chart.
The width of the border around the pie chart.
The percentage of the chart that should be a donut hole. Must be between DONUT_MIN_PERCENTAGE and DONUT_MAX_PERCENTAGE.
The color to be used for the pie chart if pieColors is empty.
The colors to be used for the slices in the pie chart.
Returns a list of the properties of the PieChartStyle.