/**
  * Init
  *
  * @param \Zend\ModuleManager\ModuleManagerInterface $moduleManager
  * @return void
  */
 public function init(ModuleManagerInterface $moduleManager)
 {
     $eventManager = MembershipEvent::getEventManager();
     // someone forced a user's role, and now we must clean all the user's membership queue
     $eventManager->attach(UserEvent::EDIT_ROLE, function ($e) use($moduleManager) {
         if ($e->getParam('user_id') != UserBaseModel::DEFAULT_SYSTEM_ID) {
             $this->deleteUserMembershipLevels($moduleManager, $e->getParam('object_id'));
         }
     });
 }