In commit e95f77d34c HubSub lost the
'staticGet' function in a consolidation into the Managed_DataObject class.
This was done carelessly by me as HubSub::staticGet was actually taking
two arguments, none of which was a key and merging them in HubSub::hashkey()
(staticGet was renamed getKV 2a4dc77a63).
NOTE: This complements commit 7e4718a4eb which
fixed a similar issue for the Magicsig class.