Is it possible to emit an error when parsing an option for groups other than the selected?

[Difocd]

The groupChoice feature allow users to define multiple groups and use an option to select one from these. The doc said that:

Options for groups other than the selected one are ignored

I am wondering if it's possible to emit an error other than just ignoring the option from other group. And then it will be less error prone.

For example:

sealed class LoadConfig(name: String): OptionGroup(name)
class FromDisk : LoadConfig("Options for loading from disk") {
    val path by option().file().required()
    val followSymlinks by option().flag()
}

class FromNetwork: LoadConfig("Options for loading from network") {
    val url by option().required()
    val username by option().prompt()
    val password by option().prompt(hideInput = true)
}

class Tool : CliktCommand(help = "An example of a custom help formatter that uses ansi colors") {
    val load by option().groupChoice(
            "disk" to FromDisk(),
            "network" to FromNetwork()
    )

    override fun run() {
        when(val it = load) {
            is FromDisk -> echo("Loading from disk: ${it.path}")
            is FromNetwork -> echo("Loading from network: ${it.url}")
            null -> echo("Not loading")
        }
    }
}

Usage:

$ ./tool --load=disk --path=./config --follow-symlinks --username=admin
Error: No option "--username" when "--load=disk"