code: protected List<LaApplicationMessage> toApplicationMessageList(UserMessages messages) {
          final List<LaApplicationMessage> convertedList = new ArrayList<LaApplicationMessage>(messages.size());
          for (String property : messages.toPropertySet()) {
              for (Iterator<UserMessage> ite = messages.accessByIteratorOf(property); ite.hasNext();) {
                  final UserMessage message = ite.next();
                  verifyResourceMessage(messages, message);
                  convertedList.add(toApplicationMessage(property, message));
              }
          }
          return convertedList;
      }
docs: ===================