presto-main/src/main/java/io/prestosql/sql/planner/optimizations/AddExchanges.java/AddExchanges/visitCorrelatedJoin
class AddExchanges:        @Override
        public PlanWithProperties visitCorrelatedJoin(CorrelatedJoinNode node, PreferredProperties preferredProperties)
        {
            throw new IllegalStateException("Unexpected node: " + node.getClass().getName());
        }