private function trsJsonMercureToArray(string $string):array
    {
        $len =  strlen($string);

        if ($len > 3 && ($string[0] == "{" && $string[$len - 1] == "}")) {
            $string = str_replace("{", "", $string);
            $string = str_replace("}", "", $string);
            $r = explode(',', $string);
            return (!in_array(" ", $r))? $r : array();
        }
        return (array());
    }