c# - 如何创建不同的自动映射？

Question

    Mapper.CreateMap<Product, SelectListOptionItem>()
        .ForMember(dest => dest.Text, opt => opt.MapFrom(src => src.Description))
        .ForMember(dest => dest.Value, opt => opt.MapFrom(src => src.Id));

我需要对 Product.TypeId 使用 distinct