private function getKey(string $action, string $method, string $separator = '_')
    {
        //setSomeSample -> post/Some/Sample
        $key = preg_replace('/([A-Z0-9])/', $separator."$1", $method);
        //set/Some/Sample -> /some/sample
        return trim(strtolower(substr($key, strlen($action))), $separator);
    }