presto-main/src/main/java/io/prestosql/execution/buffer/PageCodecMarker.java/PageCodecMarker/toSummaryString
class PageCodecMarker:    public static String toSummaryString(byte markers)
    {
        if (markers == none()) {
            return "NONE";
        }
        return Arrays.stream(values())
                .filter(marker -> marker.isSet(markers))
                .map(PageCodecMarker::name)
                .collect(Collectors.joining(", "));
    }