Nettosphere multi server for unit test

[fstn]

For unit test purpose, I need to do this:

• start nettosphere server 1 and 2
• stop 2
• restart 2

When I try to stop 2 it's also stop 1

I created server like this:
server = new Nettosphere.Builder().config(builder.build()).build();

And stop it like this:
server.stop();
I think the problem come from function stop code that do:
ALL_CHANNELS.close();

where ALL_CHANNELS is static.

Any ideas?

Thank you