@Override
    @SuppressWarnings("unchecked")
    public void terminate( ClientServiceManager serviceManager ) {
        Client client = serviceManager.getClient();
        client.removeMessageListener(delegator, delegator.getMessageTypes());                   
    }
Used internally to unregister the RPC MessageDelegator that
 was previously added to the network Client.
jme3-networking/src/main/java/com/jme3/network/service/rpc/RpcClientService.java