public function isValid(array $attributes = [])
    {
        try {
            if (!isset($attributes['validator'])) {
                return false;
            }
            $reflection = new ReflectionClass($attributes['validator']);

            if (!$reflection->hasMethod('__invoke')) {
                return false;
            }
            if (!in_array('Antares\Tester\Contracts\Tester', $reflection->getInterfaceNames())) {
                return false;
            }
        } catch (\Exception $e) {
            Log::emergency($e);
            return false;
        }
        return true;
    }