public function argsToParams()
    {
        $args = [];
        foreach ($this->args as $key => $value) {
            $value = is_int($key) ? $value : $key;
            preg_match("/(\\\$[\\\a-z_\\x7f-\\xff][a-z0-9_\\x7f-\\xff]*)/i", $value, $match);
            $args[] = $match[1];
        }
        return join(', ', $args);
    }