//---------------------------------------------------------------------
private static async ValueTask <double> Sink(DataPointIterator data, CancellationToken ct = default)
{
double sum = 0;
uint count = 0;
await foreach (DataPoint dp in data.WithCancellation(ct))
{
sum += dp.Y;
if (count % (1 << 15) == 0)
{
Console.WriteLine($"count: {count}, sum: {sum}");
}
count++;
}
return(sum);
}