presto-main/src/main/java/io/prestosql/sql/planner/optimizations/PredicatePushDown.java/OuterJoinPushDownResult/OuterJoinPushDownResult
class OuterJoinPushDownResult:            private OuterJoinPushDownResult(Expression outerJoinPredicate, Expression innerJoinPredicate, Expression joinPredicate, Expression postJoinPredicate)
            {
                this.outerJoinPredicate = outerJoinPredicate;
                this.innerJoinPredicate = innerJoinPredicate;
                this.joinPredicate = joinPredicate;
                this.postJoinPredicate = postJoinPredicate;
            }