/** * @param \Orm\Zed\Discount\Persistence\SpyDiscountVoucher $discountVoucherEntity * * @return void */ protected function decrementNumberOfUses(SpyDiscountVoucher $discountVoucherEntity) { $numberOfUses = $discountVoucherEntity->getNumberOfUses(); $discountVoucherEntity->setNumberOfUses(--$numberOfUses); }