package project.educatum.service; import project.educatum.model.Subject; import java.util.List; import java.util.Optional; public interface SubjectService { List findAll(); List findAllByNameLike(String ime); void delete(Integer id); Optional findById(Integer id); List findAllByNameAndTeacherLike(String ime, List subjects); Subject create(String name); Subject findByName(String name); }