So ultimately, I'd like this code to do what their...

# coroutines

[nhaarman]

So ultimately, I'd like this code to do what their method calls are named when I call them:

fun thisShouldPrintHi() = async<Unit> {
    try {
        val reason = await(async<String> {
            throw IOException()
        })
        TODO(reason)
    } catch(e: IOException) {
        println("Hi")
    }
}

fun thisShouldCrashWithANotImplementedError() = async<Unit> {
    try {
        val reason = await(async<String> {
            "Hello"
        })
        TODO(reason)
    } catch(e: IOException) {
        println("Hi")
    }
}

And ideally without appending an extra method call like exceptionally { } to it, because I tend to forget those.
I guess such a call would be placed inside the async method, but when applied like above, every error thrown makes the app crash, even the IOException in the thisShouldPrintHi() function.