compiler/testData/diagnostics/tests/unitConversion/kt49394.kt - third_party/github/JetBrains/kotlin - Git at Google

 fun interface Run {
     fun run()
 }

 fun handle(run: Run) {
     //...
 }

 val x = {
     "STRING"
 }

 fun test() {
     handle(<!UNSUPPORTED_FEATURE("The feature \"unit conversions on arbitrary expressions\" is experimental and should be enabled explicitly. You can also change the original type of this expression to (...) -> Unit")!>x<!>)
 }
	fun interface Run {
	fun run()
	}

	fun handle(run: Run) {
	//...
	}

	val x = {
	"STRING"
	}

	fun test() {
	handle(<!UNSUPPORTED_FEATURE("The feature \"unit conversions on arbitrary expressions\" is experimental and should be enabled explicitly. You can also change the original type of this expression to (...) -> Unit")!>x<!>)
	}