fun length(s: String): Int {
  return s.<get-length>()
}

fun lengthN(s: String?): Int? {
  return { // BLOCK
    val tmp_0: String? = s
    when {
      EQEQ(arg0 = tmp_0, arg1 = null) -> null
      else -> tmp_0.<get-length>()
    }
  }
}