Nord\Lumen\Cors\CorsService::setMaxAge PHP Method

    protected function setMaxAge($maxAge)
    {
        if (!is_int($maxAge)) {
            throw new InvalidArgument('Max age must be an integer.');
        }
        if ($maxAge < 0) {
            throw new InvalidArgument('Max age must be a positive number or zero.');
        }
        $this->maxAge = $maxAge;
    }