/**
  * Merges the state of a detached object into the persistence context
  * of this ObjectManager and returns the managed copy of the object.
  * The object passed to merge will not become associated/managed with this ObjectManager.
  *
  * @param object $object
  *
  * @return object
  */
 public function merge($object)
 {
     $this->unitOfWork->merge($object);
 }