code: public static DateList getDateListInstance(final DateList origList) {
          final DateList list = new DateList(origList.getType());
          if (origList.isUtc()) {
              list.setUtc(true);
          } else {
              list.setTimeZone(origList.getTimeZone());
          }
          return list;
      }
docs: Instantiate a new datelist with the same type, timezone and utc settings
  as the origList.
  
  @param origList
  @return a new empty list.