Author: Vineet Reynolds <Vineet.Reynolds(a)gmail.com>
Date: 2013-04-30 (Tue, 30 Apr 2013)
FORGE-879 RestPlugin allows choosing the injected persistence unit.
If multiple persistence units are detected in the persistence descriptor, then the plugin
will prompt on which one needs to be used for the injected persistence context. If only
one is found, then it would be used for the injected persistence context.