public List<Comment> obtainComments(Status s) {
   CommentWapper commentWapper = null;
   if (!jcUser.isBackupComment()) return null;
   try {
     commentWapper = c.getCommentById(s.getId());
     commentCount += commentWapper.getComments().size();
     LOG.debug(++callCount + "st call weibo api (now is comments)");
   } catch (WeiboException e) {
     LOG.error(
         "occured a exception when obtaining comments status'id="
             + s.getId()
             + ", Exception:"
             + e);
     LOG.error(++callCount + "st call weibo api (now is comments) cause error");
     // outOfLimit = true;
     jcUser.setOutOfLimit(true);
   }
   if (commentWapper != null) return commentWapper.getComments();
   else return null;
 }