[c-nsp] 'hitless' XR upgrades on ASR9k?

[Jason Lixfeld]

Is there a way to do quasi-hitless XR upgrades on an ASR9k?  I have two RSPs, so I'd be under the impression that I could load the new code onto the standby, reload it, then failover from the active to the standby but I can't find any specific instructions in any of the upgrade docs I'm reading, so I can't be sure.

Anyone happen to have gone down this road before?