protected function respond($response, $request, $options, $statusCode)
    {
        if (array_key_exists('webhooks', $response)) {
            $results = [];
            foreach ($response['webhooks'] as $result) {
                $results[] = $this->mapResponse($result, $statusCode);
            }

            return $results;
        }

        // IPN response
        if (in_array(Arr::get($response, 'body'), ['VERIFIED', 'INVALID'])) {
            $response = array_merge($request, $response);
        }
        // charge request
        elseif (array_key_exists('continue_url', $options)) {
            $response['continue_url'] = $options['continue_url'];
            $response['is_redirect'] = true;
        }

        return $this->mapResponse($response, $statusCode);
    }