/**
  * @param \Orm\Zed\Discount\Persistence\SpyDiscountVoucher $discountVoucherEntity
  *
  * @return string
  */
 protected function buildLinks(SpyDiscountVoucher $discountVoucherEntity)
 {
     $buttons = [];
     $deleteVoucherCodeUrl = Url::generate('/discount/voucher/delete-voucher-code', ['id-discount' => $this->idDiscount, 'id-voucher' => $discountVoucherEntity->getIdDiscountVoucher()])->build();
     $buttons[] = $this->generateRemoveButton($deleteVoucherCodeUrl, 'Delete');
     return implode(' ', $buttons);
 }