public Collection roundTrip2(Collection collectionOfSless) {
   System.out.println("In SlessEJB3::roundTrip2 " + collectionOfSless);
   if (collectionOfSless.size() > 0) {
     Sless sless = (Sless) collectionOfSless.iterator().next();
     System.out.println("input Sless.getId() = " + sless.getId());
   }
   return collectionOfSless;
 }
 public Sless roundTrip(Sless s) {
   System.out.println("In SlessEJB3::roundTrip " + s);
   System.out.println("input Sless.getId() = " + s.getId());
   return s;
 }