import '../entities/certificate.dart'; import '../repositories/certificate_repository.dart'; import '../../core/result.dart'; class PurchaseCertificateUsecase { final CertificateRepository repository; PurchaseCertificateUsecase(this.repository); Future>> call({ required int certificateId, required int cardId, }) async { return await repository.purchaseCertificate( certificateId: certificateId, cardId: cardId, ); } }