public async void Delete()
        {
            var mock  = new ServiceMockFacade <ITenantVariableRepository>();
            var model = new ApiTenantVariableRequestModel();

            mock.RepositoryMock.Setup(x => x.Delete(It.IsAny <string>())).Returns(Task.CompletedTask);
            var service = new TenantVariableService(mock.LoggerMock.Object,
                                                    mock.RepositoryMock.Object,
                                                    mock.ModelValidatorMockFactory.TenantVariableModelValidatorMock.Object,
                                                    mock.BOLMapperMockFactory.BOLTenantVariableMapperMock,
                                                    mock.DALMapperMockFactory.DALTenantVariableMapperMock);

            ActionResponse response = await service.Delete(default(string));

            response.Should().NotBeNull();
            mock.RepositoryMock.Verify(x => x.Delete(It.IsAny <string>()));
            mock.ModelValidatorMockFactory.TenantVariableModelValidatorMock.Verify(x => x.ValidateDeleteAsync(It.IsAny <string>()));
        }