presto-spi/src/main/java/io/prestosql/spi/block/Int128ArrayBlock.java/Int128ArrayBlock/getSingleValueBlock
class Int128ArrayBlock:    @Override
    public Block getSingleValueBlock(int position)
    {
        checkReadablePosition(position);
        return new Int128ArrayBlock(
                0,
                1,
                isNull(position) ? new boolean[] {true} : null,
                new long[] {
                        values[(position + positionOffset) * 2],
                        values[((position + positionOffset) * 2) + 1]});
    }