presto-main/src/main/java/io/prestosql/operator/LookupJoinOperators.java/LookupJoinOperators/probeOuterJoin
class LookupJoinOperators:    public OperatorFactory probeOuterJoin(int operatorId, PlanNodeId planNodeId, JoinBridgeManager<? extends LookupSourceFactory> lookupSourceFactory, List<Type> probeTypes, List<Integer> probeJoinChannel, OptionalInt probeHashChannel, Optional<List<Integer>> probeOutputChannels, OptionalInt totalOperatorsCount, PartitioningSpillerFactory partitioningSpillerFactory)
    {
        return createJoinOperatorFactory(operatorId, planNodeId, lookupSourceFactory, probeTypes, probeJoinChannel, probeHashChannel, probeOutputChannels.orElse(rangeList(probeTypes.size())), JoinType.PROBE_OUTER, totalOperatorsCount, partitioningSpillerFactory);
    }