presto-orc/src/main/java/io/prestosql/orc/metadata/statistics/SliceColumnStatisticsBuilder.java/SliceColumnStatisticsBuilder/addBlock
class SliceColumnStatisticsBuilder:    @Override
    default void addBlock(Type type, Block block)
    {
        for (int position = 0; position < block.getPositionCount(); position++) {
            if (!block.isNull(position)) {
                addValue(type.getSlice(block, position));
            }
        }
    }