if (auth == null) {
return null;
}
Twitter twitter = provider.getApi(auth.getToken(), auth.getSecret());
List<Tweet> tweets = twitter.timelineOperations().getUserTimeline(200);
TimelineMusic meta = getUserTimelinePiece(tweets);
meta.setTwitterHandle(twitter.userOperations().getScreenName());
meta.setUser(user);
meta = pieceDao.persist(meta);
return meta;
}