How to display Y axis maximum value without setting axisMinimum ?

I love this library. I have a question. I want to display maximum value of Y aixs automatically. I don't want to set leftAxis.axisMaximum. Middle value is displayed automatically, but maximum value is now shown. I set maximum value, but it is not displayed. I guess that my value is not match with computeAxisValues() in your library.
How can I display Y Aix's maximuim value atomically?

let leftAxis = chartView.leftAxis
leftAxis.labelFont = .systemFont(ofSize: 10)
leftAxis.labelCount = 2
leftAxis.valueFormatter = DefaultAxisValueFormatter(formatter: leftAxisFormatter)
leftAxis.labelPosition = .outsideChart
leftAxis.spaceTop = 0.15
leftAxis.axisMinimum = 0
// leftAxis.axisMaximum = 200