using LittleShop.DTOs; namespace LittleShop.Services; public interface IVariantCollectionService { Task> GetAllVariantCollectionsAsync(); Task GetVariantCollectionByIdAsync(Guid id); Task CreateVariantCollectionAsync(CreateVariantCollectionDto createDto); Task UpdateVariantCollectionAsync(Guid id, UpdateVariantCollectionDto updateDto); Task DeleteVariantCollectionAsync(Guid id); }