public async void Get_null_record()
        {
            var mock = new ServiceMockFacade <IProductModelProductDescriptionCultureRepository>();

            mock.RepositoryMock.Setup(x => x.Get(It.IsAny <int>())).Returns(Task.FromResult <ProductModelProductDescriptionCulture>(null));
            var service = new ProductModelProductDescriptionCultureService(mock.LoggerMock.Object,
                                                                           mock.RepositoryMock.Object,
                                                                           mock.ModelValidatorMockFactory.ProductModelProductDescriptionCultureModelValidatorMock.Object,
                                                                           mock.BOLMapperMockFactory.BOLProductModelProductDescriptionCultureMapperMock,
                                                                           mock.DALMapperMockFactory.DALProductModelProductDescriptionCultureMapperMock);

            ApiProductModelProductDescriptionCultureResponseModel response = await service.Get(default(int));

            response.Should().BeNull();
            mock.RepositoryMock.Verify(x => x.Get(It.IsAny <int>()));
        }