anchor.diff:           verify_creation/1,
            delete_user/2,
            get_usp/2,
  -         is_mod_register_enabled/0]).
  +         is_mod_register_enabled/1]).
   
   % deprecated API
   -export([create_user/1,
  
positive.code: 
  create_users(Config, Who) ->
      Users = get_users(Who),
      case is_mod_register_enabled() of
          true ->
              CreationResults = [create_user(Config, User) || User <- Users],
              lists:foreach(fun verify_creation/1, CreationResults);
  
negative.code:             get_users(Who)
      end,
  
      case is_mod_register_enabled(Config) of
          true ->
              [delete_user(Config, User) || User <- Users];
          _ ->
  