public int getStateSize() {
    return nfaStateList.size();
  }
Construct NFA graph for given path pattern. Only used for authentication now.

@param prefixOrFullPatternTree the included PartialPath must be a prefix or a fullPath
@param transitionMap transitionMap
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/path/fa/dfa/graph/NFAGraph.java