$engine = new ConpherenceThreadSearchEngine();
$engine->setViewer($viewer);
$saved = $engine->buildSavedQueryFromBuiltin('all')
  ->setParameter('ids', array($conpherence_id))
  ->setParameter('fulltext', $fulltext);

$pager = $engine->newPagerForSavedQuery($saved);
$pager->setPageSize(15);

$query = $engine->buildQueryFromSavedQuery($saved);

$results = $engine->executeQuery($query, $pager);
$view = $engine->renderResults($results, $saved);

// Just to make it clear that it's doing something...
return $this->newPage()->appendChild($view->getObjectList());