/**
   * Returns a list of id of the users the configured account follows. Returns null in case of
   * error.
   */
  public ArrayList<Long> getFollowing() {

    ArrayList<Long> following = new ArrayList<Long>();
    try {
      long lCursor = -1;
      IDs friendsIDs = twitter.getFriendsIDs(twitter.getId(), lCursor);
      do {
        for (long i : friendsIDs.getIDs()) {
          following.add(i);
        }
      } while (friendsIDs.hasNext());

      return following;
    } catch (Exception ex) {
      System.err.println("[ERROR] Can't get following users.");
      ex.printStackTrace();
      return null;
    }
  }