@Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                          .omitNullValues()
                          .add("routeXdsResource", routeXdsResource)
                          .add("virtualHostSnapshots", virtualHostSnapshots)
                          .toString();
    }
The virtual hosts represented by {@link RouteConfiguration#getVirtualHostsList()}.
xds/src/main/java/com/linecorp/armeria/xds/RouteSnapshot.java