presto-orc/src/main/java/io/prestosql/orc/OrcWriteValidation.java/ColumnStatisticsValidation/addBlock
class ColumnStatisticsValidation:        private void addBlock(Block block)
        {
            statisticsBuilder.addBlock(type, block);

            List<Block> fields = fieldExtractor.apply(block);
            for (int i = 0; i < fieldBuilders.size(); i++) {
                fieldBuilders.get(i).addBlock(fields.get(i));
            }
        }