presto-main/src/main/java/io/prestosql/operator/OuterLookupSource.java/OuterLookupSource/isJoinPositionEligible
class OuterLookupSource:    @Override
    public boolean isJoinPositionEligible(long currentJoinPosition, int probePosition, Page allProbeChannelsPage)
    {
        return lookupSource.isJoinPositionEligible(currentJoinPosition, probePosition, allProbeChannelsPage);
    }