Method: Ensure coupon is valid for sale items in the list is valid or throw exception.

Method: All exclusion rules must pass at the same time for a product coupon to be valid.

Method: Cart discounts cannot be added if non-eligible product is found.

Method: Exclude products.

Method: Exclude categories from product list.

Method: Check if a coupon is valid.

Method: Ensure coupon amount is valid or throw exception.

Method: Ensure coupon is valid for products in the list is valid or throw exception.