presto-orc/src/main/java/io/prestosql/orc/StripeReader.java/StripeReader/includeColumnsRecursive
class StripeReader:    private static void includeColumnsRecursive(Set<OrcColumnId> result, Collection<OrcColumn> readColumns)
    {
        for (OrcColumn column : readColumns) {
            result.add(column.getColumnId());
            includeColumnsRecursive(result, column.getNestedColumns());
        }
    }