public void registerMultiUserChatService(@Nonnull final MultiUserChatService service) {
        registerMultiUserChatService(service, true);
    }
Registers a new MultiUserChatService implementation to the manager.

This is typically used if you have a custom MUC implementation that you want to register with the manager. In
other words, it may not be database stored and may follow special rules, implementing MultiUserChatService.
It is also used internally to register services from the database.

Triggers the service to start up.

An event will be sent to all other cluster nodes to inform them that a new service was added.

@param service The MultiUserChatService to be registered.
@see #createMultiUserChatService(String, String, boolean)
xmppserver/src/main/java/org/jivesoftware/openfire/muc/MultiUserChatManager.java