/**
  * @param $privateCertPfx
  * @param $privateCertPass
  * @param bool $productionMode
  * @throws Exception if there are problems with certificate loading
  */
 public function __construct($privateCertPfx, $privateCertPass, $productionMode = FALSE)
 {
     $this->cert = new Certificate();
     $this->cert->loadFile($privateCertPfx, $privateCertPass);
     $this->cis = new CIS_Service();
     if ($productionMode) {
         $this->setProductionMode();
     }
 }