@Override
    public Actuator visitSequentiallyComposingActuator(SequentiallyComposingActuator actuator) {

       return new SequentiallyComposingActuator(new DecoraterIterable(actuator.iterable));
    }

}

class DecoraterIterable implements Iterable<Pair<Predicate<Movable>, Actuator>>{
//Iterable<Pair<Predicate<Movable>, Actuator>> iterable;
 Iterator<Pair<Predicate<Movable>, Actuator>> iterator;
    public DecoraterIterable(Iterable<Pair<Predicate<Movable>, Actuator>> iterable) {
        //this.iterable = iterable;
        iterator = iterable.iterator();
    }

    @Override
    public Iterator<Pair<Predicate<Movable>, Actuator>> iterator() {
       return new Iterator<Pair<Predicate<Movable>, Actuator>>() {

           @Override
           public boolean hasNext() {
              return iterator.hasNext();
           }

           @Override
           public Pair<Predicate<Movable>, Actuator> next() {
               Pair<Predicate<Movable>, Actuator> pair =  iterator.next();
               Pair<Predicate<Movable>, Actuator> decPair = new Pair<>(pair.first,pair.second.accept(new HorizontalFlip()));
               return decPair;
           }
       };
    }

}