protected IFAState tryGetNextState(
      final N node,
      final IFAState sourceState,
      final Map<String, IFATransition> preciseMatchTransitionMap) {
    final IFATransition transition = preciseMatchTransitionMap.get(node.getName());
    if (transition == null) {
      return null;
    }
    return patternFA.getNextState(sourceState, transition);
  }
Try to get next matched state from sourceState and add it into currentStateMatchInfo

@param child child node to match
@param sourceState source state
@param currentStateMatchInfo currentStateMatchInfo
@return iterator of rest transitions
iotdb-core/node-commons/src/main/java/org/apache/iotdb/commons/schema/tree/AbstractTreeVisitor.java