public Collection<User> loadUsers(Collection<Integer> usersIdsList) throws QBResponseException {
    Collection<QBUser> usersList = (Collection<QBUser>) QBUsers.getUsersByIDs(usersIdsList, null);

    Collection<User> usersListResult = FriendUtils.createUsersList(usersList);

    if (usersList != null) {
      DatabaseManager.saveUsers(context, usersListResult);
    }

    return usersListResult;
  }
  public User loadUser(int userId) throws QBResponseException {
    QBUser user = QBUsers.getUser(userId);
    User resultUser = null;

    if (user != null) {
      resultUser = FriendUtils.createUser(user);
      DatabaseManager.saveUser(context, resultUser);
    }

    return resultUser;
  }