presto-main/src/main/java/io/prestosql/sql/planner/plan/CorrelatedJoinNode.java/CorrelatedJoinNode/getOutputSymbols
class CorrelatedJoinNode:    @Override
    @JsonProperty("outputSymbols")
    public List<Symbol> getOutputSymbols()
    {
        return ImmutableList.<Symbol>builder()
                .addAll(input.getOutputSymbols())
                .addAll(subquery.getOutputSymbols())
                .build();
    }