class Doughnut {
    cook() {
        print "Dunk in the fryer.";
    }

    zzz() {
        print "Bla";
    }
}

class Cruller < Doughnut {
    finish() {
        print "Glaze with icing.";
    }
}

var o2 = Cruller();
o2.cook();
o2.finish();