presto-main/src/main/java/io/prestosql/sql/planner/optimizations/ActualProperties.java/Global/streamPartitionedOn
class Global:        public static Global streamPartitionedOn(List<Symbol> streamPartitioning)
        {
            return new Global(
                    Optional.empty(),
                    Optional.of(Partitioning.create(SOURCE_DISTRIBUTION, streamPartitioning)),
                    false);
        }