public List<User> GetUsers(User[] users)
 {
     List<User> result = new List<User>();
     foreach (User usr in users)
     {
         result.Add(usr);
     }
     return result;
 }
 public string SimpleObj(User user)
 {
     return string.Format("Hello UserInfo, {0}-{1}", user.Id, user.Name);
 }