presto-raptor-legacy/src/main/java/io/prestosql/plugin/raptor/legacy/storage/ShardStats.java/ShardStats/computeColumnStats
class ShardStats:    public static Optional<ColumnStats> computeColumnStats(OrcReader orcReader, long columnId, Type type, TypeManager typeManager)
            throws IOException
    {
        return Optional.ofNullable(doComputeColumnStats(orcReader, columnId, type, typeManager));
    }