presto-spi/src/main/java/io/prestosql/spi/block/AbstractSingleArrayBlock.java/AbstractSingleArrayBlock/writePositionTo
class AbstractSingleArrayBlock:    @Override
    public void writePositionTo(int position, BlockBuilder blockBuilder)
    {
        checkReadablePosition(position);
        getBlock().writePositionTo(position + start, blockBuilder);
    }