Comment the re-hydration

Author: soyuka

src/Bridge/Doctrine/Orm/Extension/EagerLoadingExtension.php

@@ -232,7 +232,8 @@ private function joinRelations(QueryBuilder $queryBuilder, QueryNameGeneratorInt
 
             $this->joinRelations($queryBuilder, $queryNameGenerator, $mapping['targetEntity'], $forceEager, $fetchPartial, $associationAlias, $options, $normalizationContext, 'leftJoin' === $method, $joinCount, $currentDepth);
         }
-
+        
+        // result is discarded (this is just re-hydrating the collections) see http://ocramius.github.io/blog/doctrine-orm-optimization-hydration/
         $queryBuilder->getQuery()->getResult();
     }