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How to use String values for X-Axis in Charts instead of doubles?

I want to display String values for X-Axis in line chart via using 'Charts' I've followed tutorial for same here. As per wrote there
let lineChartData = LineChartData(xVals: dataPoints, dataSet: lineChartDataSet)
I'm not finding in current latest version of library. In, current library version's demo code I'm only able to fill double type of data for X-axis and Y-axis. Please help me to solve this.
Here is desired output.

8 months ago · Santiago Trujillo

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Accepted Answer · 2022-05-24T16:59:35.150Z

There's a protocol IAxisValueFormatter that you can implement and achieve your expected result.

EDIT:
How to use it

While initialising
chartView.xAxis.valueFormatter = self

and implementing protocol.

extension LineChart1ViewController: IAxisValueFormatter {
    func stringForValue(_ value: Double, axis: AxisBase?) -> String {
        let months = ["January","February","March","April","May","June","July","Auguest","September","October","November","December"]
        return months[Int(value)]
    }
}