code: public List<IFD> getSubIFD() {
      List<IFD> l = new ArrayList<IFD>();
      if (hasSubIFD()) {
        for (abstractTiffType o : tags.get(330).getValue()) {
          l.add((IFD) o);
        }
      }
      return l;
    }
docs: Gets sub ifds.
  
  @return the subifd list.