Example code for article about Audio Graphs - Putting all descriptors together

ChartDescriptor.swift

// 1
var accessibilityChartDescriptor: AXChartDescriptor? {
    // 2
    get {
        AXChartDescriptor(
            title: "Example Graph",
            summary: "This graph shows example data.",
            xAxis: xAxis,
            yAxis: yAxis,
            series: series
        )
    }
    // 3
    set { }
}