code: static void registerDiscoveryClient(UUID injectorId, ReadOnlyDiscoveryClient discoveryClient, DiscoveryJmsConfig config) {
          DISCO_CLIENTS.put(injectorId, discoveryClient);
          CONFIGS.put(injectorId, config);
          LOG.info("Registered discovery client %s as %s", injectorId, discoveryClient);
      }
docs: Register a discoveryClient under a unique id.  This works around the TransportFactory's inherent staticness
  so that we may use the correct discovery client even in the presence of multiple injectors in the same JVM.