Happyr\LinkedIn\Authenticator::fetchNewAccessToken PHP Метод

    public function fetchNewAccessToken(LinkedInUrlGeneratorInterface $urlGenerator)
    {
        $storage = $this->getStorage();
        $code = $this->getCode();
        if ($code === null) {
            /*
             * As a fallback, just return whatever is in the persistent
             * store, knowing nothing explicit (signed request, authorization
             *  code, etc.) was present to shadow it.
             */
            return $storage->get('access_token');
        }
        try {
            $accessToken = $this->getAccessTokenFromCode($urlGenerator, $code);
        } catch (LinkedInException $e) {
            // code was bogus, so everything based on it should be invalidated.
            $storage->clearAll();
            throw $e;
        }
        $storage->set('code', $code);
        $storage->set('access_token', $accessToken);
        return $accessToken;
    }