public void CreateMappings(IConfiguration configuration) { Mapper.CreateMap <ShoppingCartItem, ShoppingCartItemViewModel>() .ForMember(m => m.Options, opt => opt.MapFrom(i => OptionHelper.GetOptionNames(i.Options))) .ForMember(m => m.ProductSku, opt => opt.MapFrom(f => f.ProductSku != null ? f.ProductSku.Sku : null)); }