@Override
 // @ApiMethod(name = "ratings.add", httpMethod = "post")
 public void addRating(RatingInfo ratingInfo) throws IllegalArgumentException {
   ObjectifyService.begin();
   ratingManager.add(ratingInfo);
 }
 @Override
 // @ApiMethod(name = "ratings.get", httpMethod = "post")
 public List<RatingInfo> getRatings(RouteInfo routeInfo) throws IllegalArgumentException {
   ObjectifyService.begin();
   return ratingManager.getRatings(routeInfo);
 }