BroadleafCommerce#1113 Expanded upon the method notes of fixItemTotalRoundingIssues

(cherry picked from commit 9c91d64)

Author: AustinMRooke

core/broadleaf-framework/src/main/java/org/broadleafcommerce/core/pricing/service/workflow/FulfillmentItemPricingActivity.java

@@ -127,6 +127,11 @@ protected void populateItemTotalAmount(Order order, Map<OrderItem, List<Fulfillm
      * Because an item may have multiple price details that don't round cleanly, we may have pennies
      * left over that need to be distributed.
      * 
+     * This method may not be needed because the sum of the item amounts is derived from a double price (OrderItem's total)
+     * being multiplied and divided by whole numbers of which guarantees that each item amount is a clean multiple
+     * of the price of a single unit of that item. This behavior being enforced in populateItemTotalAmount. So we will
+     * never get a fraction of a cent that could cause totalItemAmount and totalFGItemAmount to be different values.
+     * 
      * @param order
      * @param partialOrderItemMap
      */