@Override
    public E next() {
      if (!hasNext()) {
        throw new NoSuchElementException();
      }
      E result = e;
      e = null;
      return result;
    }
The patternNode of the rawNode which is a specified name.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/path/fa/nfa/SimpleNFA.java