presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/metadata/ShardDelta.java/ShardDelta/toString
class ShardDelta:    @Override
    public String toString()
    {
        return toStringHelper(this)
                .add("oldShardUuids", oldShardUuids)
                .add("newShards", newShards)
                .toString();
    }