public async void TestUpdateDataWithTimestampColumn()
    {
        UpdateDataWithTimestampColumnAsyncSample sample = new UpdateDataWithTimestampColumnAsyncSample();
        var rowCount = await sample.UpdateDataWithTimestampColumnAsync(_spannerFixture.ProjectId, _spannerFixture.InstanceId, _spannerFixture.DatabaseId);

        Assert.Equal(2, rowCount);
    }
    public async Task TestQueryDataWithTimestampColumnAsync()
    {
        QueryDataWithTimestampColumnAsyncSample  sample = new QueryDataWithTimestampColumnAsyncSample();
        UpdateDataWithTimestampColumnAsyncSample updateWithTimestamp = new UpdateDataWithTimestampColumnAsyncSample();
        await updateWithTimestamp.UpdateDataWithTimestampColumnAsync(_spannerFixture.ProjectId, _spannerFixture.InstanceId, _spannerFixture.DatabaseId);

        var albums = await sample.QueryDataWithTimestampColumnAsync(_spannerFixture.ProjectId, _spannerFixture.InstanceId, _spannerFixture.DatabaseId);

        Assert.Contains(albums, a => a.AlbumId == 1 && a.SingerId == 1 && a.LastUpdateTime != null);
        Assert.Contains(albums, a => a.AlbumId == 2 && a.SingerId == 2 && a.LastUpdateTime != null);
    }