package anotherPackage import First class Second : First() { val some = { First.TEST } fun foo() = { First.test() } val some2 = { TEST } fun foo2() = { test() } } fun box(): String { if (Second().some.invoke() != "OK") return "fail 1" if (Second().foo().invoke() != "OK") return "fail 2" if (Second().some2.invoke() != "OK") return "fail 3" if (Second().foo2().invoke() != "OK") return "fail 4" return "OK" }