DrupalKernel::getServicesToPersist

protected DrupalKernel::getServicesToPersist(ContainerInterface $container)

protected function getServicesToPersist(ContainerInterface $container) {
  $persist = array();
  foreach ($container->getParameter('persist_ids') as $id) {
    // It's pointless to persist services not yet initialized.
    if ($container->initialized($id)) {
      $persist[$id] = $container->get($id);
    }
  }
  return $persist;
}