associating {TAIL ~ the lock} with {HEAD ~ another client session} and enable the feature instance to be updated in the another client session 
associating { TAIL ~ the lock } with { HEAD ~ another client session } and enable the feature instance to be updated in the another client session
OTH TAIL TAIL TAIL TAIL TAIL TAIL OTH HEAD HEAD HEAD HEAD HEAD HEAD HEAD OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH OTH