/**
  * @param proxy A proxy to a remote object implementing an UserActivity
  * @return A local UserActivity object containing the data of the remote object referenced by
  *     proxy
  */
 public static UserActivity extractObject(UserActivityTypPrx proxy) {
   return new UserActivity(
       proxy.getActivityUser(),
       proxy.getActivityTrip(),
       proxy.getUserActivityType(),
       proxy.getTimeStampInMillis());
 }