def method_missing(int i, sctor params) {
  "method_missing called : " +use.incing(i) + "." + method_name + "(" + to_string(params[0]) + ", " + to_string(params[1]) + ")";
}


assert_true(5.bob(3,4) == "metho${fut1.get()} ${fut2.get()} ")
