Does Presto-on-Spark support distribute-sort?

[skadilover]

I noticed that sparkSourceOperatorFactory does not implement the sort-order aware interface

see ：https://github.com/prestodb/presto/blob/master/presto-spark-base/src/main/java/com/facebook/presto/spark/execution/PrestoSparkRemoteSourceFactory.java

Does this mean that PrestoOnSpark does not support distribute-sort?

And are there any plans to support it in the future?