Error running the "Delegate" sample snippet from the documenation

[Vinoo]

I was going through the following document. https://gosu-lang.github.io/docs.html

Section: Superclasses, Interfaces and Delegates. Got error when I was trying out the snippet.

Unexpected token: return [line:7 col:33] in

line 6: 

line 7:    property get Impl : Runnable {

line 8:      return _runnable

Line Number: 7  Column: 33

class MyRunnable implements Runnable {

    ..

    //Missing the () 

    property get Impl : Runnable {

       return _runnable

    }

}

[German Muñoz]

If you comment the gettter method, the example will run anyway, the getter is not needed

// property get Impl : Runnable {

     //return _runnable

   //}

Is just a hack to continue the tutorials