compiler/testData/codegen/box/extensionFunctions/extensionFunctionAsAnExpression.kt - third_party/github/JetBrains/kotlin - Git at Google

 fun box(): String {
     return "O".(fun String.(y: String): String = this + y)("K")
 }
	fun box(): String {
	return "O".(fun String.(y: String): String = this + y)("K")
	}