/**
   * 处理Reference了当前pullrequest的操作
   *
   * @param source
   */
  public List<PullRequestEvent> processReference(NodeList nodeList, List<PullRequestEvent> pList) {
    SimpleNodeIterator sni = nodeList.elements();
    while (sni.hasMoreNodes()) {
      Node node = sni.nextNode();
      if (node.getText().contains("div class=\"discussion-item discussion-item-ref\"")) {
        PullRequestEvent pullRequestEvent = new PullRequestEvent();
        pullRequestEvent.setAction("ref");
        Node anotherAtifactNode = DownloadUtil.getSomeChild(node, "class=\"title-link\"");
        pullRequestEvent.setBody(
            anotherAtifactNode == null ? "" : anotherAtifactNode.toPlainTextString());
        Pattern artifactPattern = Pattern.compile("[a-zA-Z]+/[a-zA-Z]+/[a-zA-Z]+/[a-z[0-9]]+");
        Matcher artifactMatcher =
            artifactPattern.matcher(anotherAtifactNode == null ? "" : anotherAtifactNode.getText());
        if (artifactMatcher.find()) {
          String anotherAtifact = artifactMatcher.group();
          pullRequestEvent.setPullrequestBaseRef(anotherAtifact);
          System.out.println(anotherAtifact);
        }
        Node actorNode = DownloadUtil.getSomeChild(node, "class=\"author\"");
        pullRequestEvent.setActor(actorNode == null ? "" : actorNode.toPlainTextString());
        Node timeNode = DownloadUtil.getSomeChild(node, "datetime");
        Pattern pattern = Pattern.compile("datetime=\".*\"");
        Matcher matcher = pattern.matcher(timeNode.getText());
        if (matcher.find()) {
          String time = matcher.group().split("\"")[1];
          pullRequestEvent.setCreatedAt(time);
        }
        pList.add(pullRequestEvent);

      } else {
        // 得到该节点的子节点列表
        NodeList childList = node.getChildren();
        // 孩子节点为空,说明是值节点
        if (null != childList) { // 如果孩子结点不为空则递归调用
          processReference(childList, pList);
        }
      }
    }
    return pList;
  }