import test.kotlin.A; import static test.kotlin.JvmOverloadsFunctionsKt.foo; class JvmOverloadsFunctions { public static void main(String[] args) { A a = new A() { }; foo(a.getClass(), a, true, "Some"); foo(a.getClass(), a, true); foo(a.getClass(), a); // Before KT-28556 is fixed the second not-nullable parameter wasn't marked as it shoud, so there were no warnings on it foo(null, null, true, null); foo(null, null, true); foo(null, null); } }