/**
  * Generate vault payment public hash
  *
  * @param PaymentTokenInterface $paymentToken
  * @return string
  */
 protected function generatePublicHash(PaymentTokenInterface $paymentToken)
 {
     $hashKey = $paymentToken->getGatewayToken();
     if ($paymentToken->getCustomerId()) {
         $hashKey = $paymentToken->getCustomerId();
     }
     $hashKey .= $paymentToken->getPaymentMethodCode() . $paymentToken->getType() . $paymentToken->getTokenDetails();
     return $this->encryptor->getHash($hashKey);
 }