package tech.techharbor.Service; import tech.techharbor.Model.ReviewModel; import java.util.List; import java.util.Optional; public interface ReviewService { List listReviews(); Optional findById(Integer id); ReviewModel create(Integer rating, String description, Integer customerId, Integer productId); ReviewModel update(Integer reviewId, Integer rating, String description); void delete(Integer id); List getReviewsByProductId(Integer productId); }