code: public void setObjectClasses(List<String> objectClasses) {
          int size = objectClasses.size();
          iObjectClasses = new ArrayList<String>(objectClasses.size());
          for (int i = 0; i < size; i++) {
              String objectClass = objectClasses.get(i).toLowerCase();
              if (!iObjectClasses.contains(objectClass)) {
                  iObjectClasses.add(objectClass);
              }
          }
      }
docs: Sets a list of defining object classes for this entity type.
  The object classes will be stored in lower case form for comparison.
  
  @param objectClasses A list of defining object class names to be added.