private function createDataCollector()
    {
        $definition = new Definition(
            Utility::getBundleClass('DataCollector\MongoDb\PrettyDataCollector')
        );
        $definition->addTag('data_collector', ['id' => 'as3persistermongodb', 'template' => 'As3ModlrBundle:Collector:mongodb']);
        $definition->setPublic(false);
        return $definition;
    }