public DeliveryGroupService(
     IDeliveryGroupRepository deliveryGroupRepository,
     IProductsDeliveryGroupsRepository productsDeliveryGroupsRepository,
     IUnitOfWork unitOfWork)
 {
     _deliveryGroupRepository          = deliveryGroupRepository;
     _productsDeliveryGroupsRepository = productsDeliveryGroupsRepository;
     _unitOfWork = unitOfWork;
 }
 public ProductService(
     IProductRepository productRepository,
     IProductGroupRepository productGroupRepository,
     IProductsDeliveryGroupsRepository productsDeliveryGroupsRepository,
     ITariffRepository tariffRepository,
     IUnitOfWork unitOfWork)
 {
     _productRepository                = productRepository;
     _productGroupRepository           = productGroupRepository;
     _productsDeliveryGroupsRepository = productsDeliveryGroupsRepository;
     _tariffRepository = tariffRepository;
     _unitOfWork       = unitOfWork;
 }