public RangeQuery<K, V> withAscendingKeys() {
        return new RangeQuery<>(this.lower, this.upper, ResultOrder.ASCENDING);
    }
Set the query to return the serialized byte[] of the keys in ascending order.
Order is based on the serialized byte[] of the keys, not the 'logical' key order.
@return a new RangeQuery instance with ascending flag set.
streams/src/main/java/org/apache/kafka/streams/query/RangeQuery.java