add a conversion object to doctrine collection

gistfile1.php

<?php

class ConversionController extends Controller {
    
    public function create() 
    {
        $dc = new Doctrine_Collection('Conversion');
    
        if ($dc instanceof Doctrine_Collection) {
            for($i =0; $i < 10; $i++) {
                $record = new Conversion();
                $record->setType(ConversionTable::TYPE_CPA);
                $record->setSite($siteId);
                $record->setCampaign($campaignId);
                $record->setDate($date);
                $record->setStatus(ConversionTable::STATUS_ONHOLD);
    
                $dc->add($record);
            }  
        } 
    
        $options = array('campaign' => $campaignId, 'site' => $siteId, 'type' => $type, 'date' => $date);
        $builder = new ConversionCollectionBuilder($dc);
        $builder->build($options);
        $collection = $builder->getCollection();
        #$collection->save();
    }
}