public static RPCNetworkParams asParameters(ContainerMbusConfig mbusConfig, SlobroksConfig slobroksConfig, String identity) {
        return asParameters(mbusConfig, identity).setSlobroksConfig(slobroksConfig);
    }
Injectable component which provides an {@link NetworkMultiplexer}, creating one if needed,
i.e., the first time this is created in a container--subsequent creations of this will reuse
the underlying network that was created initially. This breaks the DI pattern, but must be done
because the network is a unique resource which cannot exist in several versions simultaneously.

@author jonmv
container-messagebus/src/main/java/com/yahoo/container/jdisc/messagebus/NetworkMultiplexerProvider.java