private Tweets parse(XmlPullParser aParser) throws Exception {
    tweets = new Tweets();

    int _e = aParser.next();
    while (_e != XmlPullParser.END_DOCUMENT) {
      if (_e == XmlPullParser.START_TAG) {
        startTag(aParser.getPrefix(), aParser.getName(), aParser);
      }
      _e = aParser.next();
    }

    return tweets;
  }