anchor.diff:  -spec get_existing_user_test() -> ok | {error, term()}.
   get_existing_user_test() ->
   	Id = get_index_id(?TEST_NAME),
  -	?assertNotMatch("{error, \"no match\"}", Id),
  +	?assertNotMatch({error, "no match"}, Id),
   	erlang:display(?USERS_URL ++ Id),
   	Response1 = get_request(?USERS_URL ++ Id),
   	check_returned_code(Response1, 200).
  
positive.code: 		_ ->
  			Response
  	end.
  %% 	case re:run(A, "id\":\"[^\"]*", [{capture, first, list}]) of
  %% 		{match, ["id\":\"" ++ Id]} -> Id;
  %% 		nomatch -> {error, "no match"}
  %% 	end.
  		
  
  %% @doc
  
negative.code: 	Response1 = post_request(?USERS_URL, "application/json", 
  					 "{\"user_name\":\""++?TEST_NAME++"\"}"),
  	check_returned_code(Response1, 200),
  	timer:sleep(1500), 
  	{ok, {_,_,Body}} = Response1,
  	erlang:display(get_index_id(?TEST_NAME)),
  	?assertNotMatch({error, "no match"}, get_index_id(?TEST_NAME)).
  
  
  %% @doc
  