fun foo1(x : String?) : String {
    when (x) {
        "abc", "cde" -> return "abc_cde"
        "efg", "ghi", null -> return "efg_ghi"
    }

    return "other"
}

fun foo2(x : String?) : String {
    when (x) {
        "abc", "cde" -> return "abc_cde"
        "efg", "ghi" -> return "efg_ghi"
        else -> return "other"
    }
}

// 2 LOOKUPSWITCH