import java.util.ArrayList

// "Create extension function 'set'" "true"
// WITH_RUNTIME

class Foo<T> {
    fun <T> x (y: Any, w: java.util.ArrayList<T>) {
        y["", w] = w
    }
}

operator fun <T> Any.set(s: String, w: ArrayList<T>, value: ArrayList<T>) {
    throw UnsupportedOperationException("not implemented") //To change body of created functions use File | Settings | File Templates.
}