@Override
    protected Iterator<IFATransition> getPreNodeFuzzyMatchTransitionIterator() {
      if (tracebackNode == null) {
        return new SingletonIterator<>(this);
      } else {
        return new DualIterator<>(this, tracebackNode);
      }
    }
The patternNode of the rawNode contains *, like d*.
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/path/fa/nfa/SimpleNFA.java