@Override
    public String toString() {
        return MoreObjects.toStringHelper(this)
                          .omitNullValues()
                          .add("clusterXdsResource", clusterXdsResource)
                          .add("endpointSnapshot", endpointSnapshot)
                          .toString();
    }
A {@link EndpointSnapshot} which belong to this {@link Cluster}.
xds/src/main/java/com/linecorp/armeria/xds/ClusterSnapshot.java