protected HttpResponseMessage AddUsers(string userid, string[] usernames)
        {
            foreach (string username in usernames)
            {
                UserIDMapper.CreateUser(username, userid);
            }

            return(GetUserId(userid));
        }
        protected HttpResponseMessage AddUserId(string userid, string[] usernames)
        {
            if (usernames.Length != 0)
            {
                foreach (string username in usernames)
                {
                    UserIDMapper.CreateUser(username, userid);
                }

                return(GetUserIds());
            }
            else
            {
                return(GetUserId(userid));
            }
        }