private void addDomainMappingsEventListeners(
      final LoadBalancerCommonDomainMappingEventReceiver domainMappingEventReceiver) {
    domainMappingEventReceiver.addEventListener(
        new DomainMappingAddedEventListener() {
          @Override
          protected void onEvent(Event event) {
            reloadConfiguration();
          }
        });

    domainMappingEventReceiver.addEventListener(
        new DomainMappingRemovedEventListener() {
          @Override
          protected void onEvent(Event event) {
            reloadConfiguration();
          }
        });
  }