public ResultOrder resultOrder() {
        return order;
    }
Determines if the serialized byte[] of the keys in ascending or descending or unordered order.
Order is based on the serialized byte[] of the keys, not the 'logical' key order.
@return return the order of returned records based on the serialized byte[] of the keys (can be unordered, or in ascending or in descending order).
streams/src/main/java/org/apache/kafka/streams/query/RangeQuery.java