code: public String read(String path, Watcher watcher, Stat stat) throws InterruptedException, KeeperException {
  
          return store.read(path, watcher, stat);
      }
docs: @param path
  @param watcher
  @param stat
  
  @return String
  
  @throws InterruptedException
  @throws KeeperException
  @Description: 带状态信息的读取数据
  @author liaoqiqi
  @date 2013-6-17