docs: public NodeList getAt(QName name) {
          NodeList answer = new NodeList();
          for (Object child : children()) {
              if (child instanceof Node) {
                  Node childNode = (Node) child;
                  Object childNodeName = childNode.name();
                  if (name.matches(childNodeName)) {
                      answer.add(childNode);
                  }
              }
          }
          return answer;
      }