presto-orc/src/main/java/io/prestosql/orc/metadata/OrcMetadataReader.java/OrcMetadataReader/toBooleanStatistics
class OrcMetadataReader:    private static BooleanStatistics toBooleanStatistics(OrcProto.BucketStatistics bucketStatistics)
    {
        if (bucketStatistics.getCountCount() == 0) {
            return null;
        }

        return new BooleanStatistics(bucketStatistics.getCount(0));
    }