mutuallyExclusiveOptions run error when option is Boolean type

[dongfengweixiao]

import com.github.ajalt.clikt.core.CliktCommand
import com.github.ajalt.clikt.parameters.groups.mutuallyExclusiveOptions
import com.github.ajalt.clikt.parameters.groups.single
import com.github.ajalt.clikt.parameters.options.convert
import com.github.ajalt.clikt.parameters.options.flag
import com.github.ajalt.clikt.parameters.options.option


sealed class RunMode01 {
    data class Server(val isS: Boolean) : RunMode01()
    data class Client(val address: String) : RunMode01()
}

class Config01 : CliktCommand() {
    private val runMode: RunMode01? by mutuallyExclusiveOptions(
        option("-s", "--server").flag().convert { RunMode01.Server(it) },
        option("-c", "--client").convert { RunMode01.Client(it) }
    ).single()

    override fun run() = echo(runMode)
}

sealed class RunMode02 {
    data class Server(val isS: String) : RunMode02()
    data class Client(val address: String) : RunMode02()
}

class Config02 : CliktCommand() {
    private val runMode: RunMode02? by mutuallyExclusiveOptions(
        option("-s", "--server").convert { RunMode02.Server(it) },
        option("-c", "--client").convert { RunMode02.Client(it) }
    ).single()

    override fun run() = echo(runMode)
}

fun main(args: Array<String>) {

    val config01 = Config01()
    print("case 01: =>")
    config01.main(arrayOf("-s"))
//    print("case 02: =>")
//    config01.main(arrayOf("-c", "aaa"))  // error
    val config02 = Config02()
    print("case 03: =>")
    config02.main(arrayOf("-s", "bbb"))
    print("case 04: =>")
    config02.main(arrayOf("-c", "ccc"))
}

case 01: =>Server(isS=true)
case 02: =>Usage: config01 [OPTIONS]

Error: option --server cannot be used with --client