Solr Multicore, are there any way to retrieve all the cores registered?

[Walter Ferrara]

In solr, last trunk version in svn, is it possible to access the "core 
registry", or what used to be the static MultiCore object? My goal is to 
retrieve all the cores registered in a given (multicore) enviroment.
It used to be MultiCore.getRegistry() initially, at first stages of 
solr-350; but now MultiCore is static no more, and I don't find any 
reference to where pick up the multicore object initialized from 
multicore.xml.

any tips on how to retrieve such information now?
Walter