CategoryService after implementing the SaveAsync method, from Supermarket API

CategoryService.cs

public class CategoryService : ICategoryService
{
	private readonly ICategoryRepository _categoryRepository;
	private readonly IUnitOfWork _unitOfWork;

	public CategoryService(ICategoryRepository categoryRepository, IUnitOfWork unitOfWork)
	{
		_categoryRepository = categoryRepository;
		_unitOfWork = unitOfWork;
	}

	public async Task<IEnumerable<Category>> ListAsync()
	{
		return await _categoryRepository.ListAsync();
	}

	public async Task<SaveCategoryResponse> SaveAsync(Category category)
	{
		try
		{
			await _categoryRepository.AddAsync(category);
			await _unitOfWork.CompleteAsync();
			
			return new SaveCategoryResponse(category);
		}
		catch (Exception ex)
		{
			// Do some logging stuff
			return new SaveCategoryResponse($"An error occurred when saving the category: {ex.Message}");
		}
	}
}