magento#12817: Coupon code with canceled order.

Author: p-bystritsky

app/code/Magento/SalesRule/Observer/SalesOrderAfterPlaceObserver.php

@@ -12,7 +12,10 @@
 use Magento\SalesRule\Model\Rule\CustomerFactory;
 use Magento\SalesRule\Model\RuleFactory;
 
-class AbstractCouponUses
+/**
+ * Abstract class for plugins that are accounting the coupon uses.
+ */
+abstract class AbstractCouponUses
 {
     /**
      * @var RuleFactory