code: protected function canSendNotification(
          FosAvailabilityAlertSubscription $fosAvailabilityAlertSubscription,
          $countOfSubscriberPerProductAbstract
      ) {
          $percentageDifference = $this->calculatePercentageDifference(
              $fosAvailabilityAlertSubscription,
              $countOfSubscriberPerProductAbstract
          );
  
          return $percentageDifference > $this->minimalPercentageDifference;
      }
docs: @param \Orm\Zed\AvailabilityAlert\Persistence\FosAvailabilityAlertSubscription $fosAvailabilityAlertSubscription
  @param array $countOfSubscriberPerProductAbstract
  
  @return bool