/**
  * @param $pid
  * @param $totalSum
  * @return string
  */
 function displayPclass($pid, $totalSum)
 {
     if (!class_exists('KlarnaAPI')) {
         require JPATH_VMKLARNAPLUGIN . DS . 'klarna' . DS . 'helpers' . DS . 'klarnaapi.php';
     }
     $kCheckout = new KlarnaAPI($this->country, $this->lang, 'part', $totalSum, KlarnaFlags::CHECKOUT_PAGE, $this->klarna, array(KlarnaPClass::ACCOUNT, KlarnaPClass::CAMPAIGN, KlarnaPClass::FIXED), JPATH_VMKLARNAPLUGIN);
     return $kCheckout->renderPClass($pid);
 }