All classes that implement ShipmentPromotionOfferInterface in Commerce Shipping 8.2
- class \Drupal\commerce_shipping\Plugin\Commerce\PromotionOffer\ShipmentFixedAmountOff uses FixedAmountOffTrait
- class \Drupal\commerce_shipping\Plugin\Commerce\PromotionOffer\ShipmentPercentageOff uses PercentageOffTrait
- class \Drupal\commerce_shipping\Plugin\Commerce\PromotionOffer\ShipmentPromotionOfferBase implements ShipmentPromotionOfferInterface