Symfony içinde programlı olarak elasticsearch indexin doldurulması

use FOS\ElasticaBundle\Index\IndexManager;
use FOS\ElasticaBundle\Index\Resetter;
use FOS\ElasticaBundle\Provider\ProviderInterface;
use FOS\ElasticaBundle\Provider\ProviderRegistry;
use FOS\ElasticaBundle\Elastica\Index;

class ElasticsearchPupulate
{
    ...

    public function populateElasticSearch()
    {
        /** @var IndexManager $indexManager */
        $indexManager = $this->get('fos_elastica.index_manager');
        /** @var ProviderRegistry $providerRegistry */
        $providerRegistry = $this->get('fos_elastica.provider_registry');
        /** @var Resetter $resetter */
        $resetter = $this->get('fos_elastica.resetter');

        foreach ($indexManager->getAllIndexes() as $indexName => $index) {
            /** @var Index $index */
            if ($index->exists()) {
                $resetter->resetIndex($indexName);
            } else {
                $index->create();
            }
            
            /** @var $providers ProviderInterface[] */
            $providers = $providerRegistry->getIndexProviders($indexName);
            foreach ($providers as $provider) {
                $provider->populate();
            }
            
            $indexManager->getIndex($indexName)->refresh();
        }
    }
}