presto-orc/src/main/java/io/prestosql/orc/stream/LongOutputStreamV2.java/SerializationUtils/unrolledBitPack8
class SerializationUtils:        private void unrolledBitPack8(long[] input, int offset, int len, SliceOutput output)
        {
            unrolledBitPackBytes(input, offset, len, output, 1);
        }