@Override
    @SuppressWarnings("unchecked")
    protected void onInitialize( ClientServiceManager serviceManager ) {        
        Client client = serviceManager.getClient();
        this.rpc = new RpcConnection(client);
        
        delegator = new ObjectMessageDelegator(rpc, true);       
        client.addMessageListener(delegator, delegator.getMessageTypes());                   
    }
Used internally to set up the RpcConnection and MessageDelegator.
jme3-networking/src/main/java/com/jme3/network/service/rpc/RpcClientService.java