private static final StyleChart CHART_STYLE_PRECISION_RECALL =
                    new StyleChart.Builder().width(CHART_WIDTH_PX, LengthUnit.Px).height(CHART_HEIGHT_PX, LengthUnit.Px)
                                    .margin(LengthUnit.Px, 60, 60, 40, 10).strokeWidth(2.0)
                                    .seriesColors(Color.BLUE, Color.GREEN).build();