code: public ServiceBroker createService(String name, Service service) {
  		if (serviceRegistry == null) {
  
  			// Start service later
  			services.put(name, service);
  		} else {
  
  			// Register and start service now
  			eventbus.addListeners(name, service);
  			serviceRegistry.addActions(name, service);
  		}
  		return this;
  	}
docs: Installs a new service with the specified name (eg. "user" service) and
  notifies other nodes about the actions/listeners of this new service.
  
  @param name
  custom service name (eg. "user", "logger", "configurator",
  etc.)
  @param service
  the new service instance
  @return this ServiceBroker instance (from "method chaining")