@Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                          .omitNullValues()
                          .add("listenerXdsResource", listenerXdsResource)
                          .add("routeSnapshot", routeSnapshot)
                          .toString();
    }
A {@link RouteSnapshot} which belong to this {@link Listener}.
xds/src/main/java/com/linecorp/armeria/xds/ListenerSnapshot.java