code: static List<Node> nodeList2List(NodeList nl) {
          int len = nl.getLength();
          List<Node> l = new ArrayList<Node>(len);
          for (int i = 0; i < len; i++) {
              Node n = nl.item(i);
              if (!XMLUnit.getIgnoreComments() || !(n instanceof Comment)) {
                  l.add(n);
              }
          }
          return l;
      }
docs: Returns the NodeList's Nodes as List, taking ignoreComments
  into account.