All classes that implement AvailabilityCheckerInterface in Commerce Core 8.2
- class \Drupal\commerce_license\LicenseAvailabilityCheckerExistingRights implements AvailabilityCheckerInterface
- class \Drupal\commerce_order_test\TestAvailabilityChecker implements AvailabilityCheckerInterface
- class \Drupal\commerce_stock\StockAvailabilityChecker implements AvailabilityCheckerInterface
- class \Drupal\xquantity_stock\XquantityStockAvailabilityChecker implements AvailabilityCheckerInterface