There is no expiry option in any of the Upsert, Replace, Insert options. Additionally, the GetOptions has it, but it comes back as None. You would maybe expect this to always be a time delta, just one that has a value of 0 for this? Maybe? Perhaps None is better, but lets get an expiry in there, then make sure that is what comes back.
I'd really like this in the 3.0.0 release. But I'm leaving the fix version blank for now, lets discuss.