// query criterion       
        $query->criterion = new Criterion\SectionId( array( 1 ) );

        // apply sort clauses
        $query->sortClauses = array(
            new SortClause\Field( 'folder', 'title', SearchQuery::SORT_ASC, 'eng-GB' )
        );

        // find content
        $result = $searchService->findContent( $query );

        foreach ( $result->searchHits as $searchHit )
            $output->writeln( '* ' . $searchHit->valueObject->contentInfo->name );