public function initialize(IPieCrust $pieCrust)
 {
     if ($pieCrust->isCachingEnabled()) {
         $this->cache = new Cache($pieCrust->getCacheDir() . 'bitbucket_requests/');
         $this->cacheTime = 60 * 60;
         // Cache requests for one hour.
     } else {
         $this->cache = null;
         $this->cacheTime = false;
     }
 }