canceling_parent_coroutine.kt

fun main() = runBlocking {
    val job = launch(CoroutineName("parent")) {
        launch {
            delay(2000)
            println("coroutine1: I'm done")
        }
        launch {
            delay(3000)
            println("coroutine2: I'm done")
        }
    }
    println("Cancelling the parent coroutine...")
    job.cancelAndJoin()
    println("Parent coroutine cancelled")
}