private static String ordinal(int arg) {
        switch (arg) {
            case 1:
                return "first";
            case 2:
                return "second";
            case 3:
                return "third";
            case 4:
                return "fourth";
            case 5:
                return "fifth";
            default:
                return String.format("%s", arg);
        }
    }
@return The arguments to this function
smithy-rules-engine/src/main/java/software/amazon/smithy/rulesengine/language/syntax/expressions/functions/LibraryFunction.java