private function isCouponEligible(CouponInterface $coupon, PromotionInterface $promotion, UserInterface $user)
 {
     $countPlacedOrders = $this->subjectRepository->countByUserAndCoupon($user, $coupon);
     // <= because we need to include the cart orders as well
     if ($countPlacedOrders <= $coupon->getPerUserUsageLimit()) {
         $this->dispatcher->dispatch(SyliusPromotionEvents::COUPON_ELIGIBLE, new GenericEvent($promotion));
         return true;
     }
     return false;
 }