/**
  * @param string $clientId
  * @param string $clientSecret
  * @param string $siteToken
  * @param string|null $baseUrl
  * @param array $httpClientConfig
  */
 public function __construct($clientId, $clientSecret, $siteToken, $baseUrl = null, array $httpClientConfig = array())
 {
     $this->clientId = $clientId;
     $this->clientSecret = $clientSecret;
     $this->siteToken = $siteToken;
     if (null !== $baseUrl) {
         Properties::setBaseUrl($baseUrl);
     }
     $this->httpClientConfig = $httpClientConfig;
 }