anchor.diff:  
   create_users(Config, Who) ->
       Users = get_users(Who),
  -    case is_mod_register_enabled() of
  +    case is_mod_register_enabled(Config) of
           true ->
               CreationResults = [create_user(Config, User) || User <- Users],
               lists:foreach(fun verify_creation/1, CreationResults);
  
positive.code:             get_users(Who)
      end,
  
      case is_mod_register_enabled() of
          true ->
              [delete_user(Config, User) || User <- Users];
          _ ->
  
negative.code:     escalus_connection:stop(Conn),
      Result.
  
  is_mod_register_enabled(Config) ->
      Server = escalus_config:get_config(escalus_server, Config, <<"localhost">>),
      Host = escalus_config:get_config(escalus_host, Config, Server),
      Port = escalus_config:get_config(escalus_port, Config, 5222),
      ClientProps = [{server, Server},
                     {host, Host},
                     {port, Port}],
      {ok, Conn, ClientProps, _} = escalus_connection:start(ClientProps,
                                                            [start_stream,
                                                             maybe_use_ssl]),
  