code: protected List<ChildData> getChildren(String path) {
          if (!checkExists(path)) {
              return new ArrayList<>();
          }
          try {
              List<ChildData> childDataList = new ArrayList<>();
              List<String> children = client.getChildren().forPath(path);
              childDataList.addAll(children.stream().map(child -> getData(path + "/" + child)).collect(Collectors.toList()));
              return childDataList;
          } catch (Exception e) {
              throw new NiubiException(e);
          }
      }
docs: 获取该path下的所有子节点
  
  @param path 父节点路径
  @return 所有子节点