// "Implement abstract class" "true"
// WITH_RUNTIME
// SHOULD_BE_AVAILABLE_AFTER_EXECUTION

private abstract class Base {
    abstract var x: Int

    abstract fun toInt(arg: String): Int
}

private class BaseImpl : Base() {
    override var x: Int
        get() = throw UnsupportedOperationException()
        set(value) {
        }

    override fun toInt(arg: String): Int {
        TODO("not implemented") //To change body of created functions use File | Settings | File Templates.
    }
}