Please use Racket and test it

Part 3 BONUS(5PTS) Function Argument Checking A function is ill-defined if two of its argument names are the same. To prevent this problem, update your parse-fundef function can detect this problem and report a bad syntax error. For example, (parse-fundef `{define {f x x} x}) must report a bad syntax error, while (parse-fundef `{define {f x y} x}) should produce a Func-Defn value.