/**
  * {@inheritdoc}
  */
 public function loadOneToManyCollection(array $assoc, $sourceEntity, PersistentCollection $coll)
 {
     $persister = $this->uow->getCollectionPersister($assoc);
     $hasCache = $persister instanceof CachedPersister;
     if ($hasCache) {
         $ownerId = $this->uow->getEntityIdentifier($coll->getOwner());
         $key = new CollectionCacheKey($assoc['sourceEntity'], $assoc['fieldName'], $ownerId);
         $list = $persister->loadCollectionCache($coll, $key);
         if ($list !== null) {
             if ($this->cacheLogger) {
                 $this->cacheLogger->collectionCacheHit($persister->getCacheRegion()->getName(), $key);
             }
             return $list;
         }
     }
     $list = $this->persister->loadOneToManyCollection($assoc, $sourceEntity, $coll);
     if ($hasCache) {
         $persister->storeCollectionCache($key, $list);
         if ($this->cacheLogger) {
             $this->cacheLogger->collectionCacheMiss($persister->getCacheRegion()->getName(), $key);
         }
     }
     return $list;
 }