/**
  * @param InMemoryCollection $toggleCollection
  * @return array
  */
 public function serialize(InMemoryCollection $toggleCollection)
 {
     $serializer = new ToggleSerializer(new OperatorConditionSerializer(new OperatorSerializer()));
     $ret = array();
     foreach ($toggleCollection->all() as $key => $toggle) {
         $ret[$key] = $serializer->serialize($toggle);
     }
     return $ret;
 }