presto-spi/src/main/java/io/prestosql/spi/block/Int128ArrayBlockBuilder.java/Int128ArrayBlockBuilder/getPositionsSizeInBytes
class Int128ArrayBlockBuilder:    @Override
    public long getPositionsSizeInBytes(boolean[] positions)
    {
        return (INT128_BYTES + Byte.BYTES) * (long) countUsedPositions(positions);
    }