public function onBootstrap(EventInterface $e)
    {
        /* @var $e \Zend\Mvc\MvcEvent */
        $serviceManager = $e->getApplication()->getServiceManager();
        /* @var $serviceManager \Zend\ServiceManager\ServiceManager */

        $this->initPluginManagerFactory(
            $serviceManager,
            __NAMESPACE__ . '\SupervisorManager',
            'supervisor_plugin_manager'
        );

        $this->initPluginManagerFactory(
            $serviceManager,
            __NAMESPACE__ . '\ListenerManager',
            'listener_plugin_manager'
        );
    }