Question: how could to get the former defaultDescription of Arg with version 2.0.0-M3?

[walmaaoui]

We need to access the default value of each arg of a CaseApp. with version 1.2.0, we used to do something like:

val caseApp:  CaseApp[T] = ???
for (arg <- app.parser.args) {
arg.defaultDescription
}

In version 2.0.0-M3, defaultDescription seems removed, are there any alternative way to do that please?