presto-main/src/main/java/io/prestosql/sql/planner/optimizations/StreamPropertyDerivations.java/StreamPropertyDerivations/visitPlan
class StreamPropertyDerivations:        @Override
        protected StreamProperties visitPlan(PlanNode node, List<StreamProperties> inputProperties)
        {
            throw new UnsupportedOperationException("not yet implemented: " + node.getClass().getName());
        }