presto-orc/src/main/java/io/prestosql/orc/OrcWriteValidation.java/WriteChecksum/WriteChecksum
class WriteChecksum:        public WriteChecksum(long totalRowCount, long stripeHash, List<Long> columnHashes)
        {
            this.totalRowCount = totalRowCount;
            this.stripeHash = stripeHash;
            this.columnHashes = columnHashes;
        }