public ArrayList<FilePath> newDirectoryStream() {
   List<FilePath> list = getBase().newDirectoryStream();
   ArrayList<FilePath> newList = New.arrayList();
   for (int i = 0, size = list.size(); i < size; i++) {
     FilePath f = list.get(i);
     if (!f.getName().endsWith(PART_SUFFIX)) {
       newList.add(wrap(f));
     }
   }
   return newList;
 }