Implementing dynamic data updates for the yAxis in a chart using Highcharts and Angular 2/4

I am currently working with a spline chart:

  this.chart = {
            chart: {
                type: 'spline',
                zoomType: 'x',
                animation: true,
                marginRight: 10,
                renderTo: chartId
            },

I am wondering how I can implement adding new data (new lines) after the user clicks on a button.

private addingAxisData() {
// Any ideas on what code should go here?
}

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