package util

sealed class Parent {
    init { @Suppress("LeakingThis") qux() }
    abstract val baz: String
    abstract fun qux(): Unit

    class Child(bar: String): Parent() {
        override val baz: String = bar
        override fun qux(): Unit = println(baz)
    }
}

fun main(args: Array<String>) {
    Parent.Child("bar")
}