code: public function findByNodeAndSite($nodeId, $siteId)
      {
          $qa = $this->createAggregationQueryBuilderWithSiteId($siteId);
          $qa->match(array('nodeId' => $nodeId));
  
          return $this->hydrateAggregateQuery($qa);
      }
docs: @param string $nodeId
  @param string $siteId
  
  @throws \Doctrine\ODM\MongoDB\MongoDBException
  
  @return mixed