kotlin/compiler/testData/codegen/boxWithJava/sam/adapters/implementAdapter.kt

class Impl: JavaInterface {
    override fun foo(r: Runnable?) {
        r?.run()
    }
}

fun box(): String {
    val fooMethods = javaClass<Impl>().getMethods().filter { it.getName() == "foo" }
    if (fooMethods.size() != 1) return fooMethods.toString()

    return "OK"
}