Symfony\Component\ClassLoader\ApcClassLoader depreceated

[dottodot]

since v4 of Symfony Symfony\Component\ClassLoader\ApcClassLoader is deprecated meaning the following code in settings.php throws an error

if ($settings['hash_salt']) {
  $prefix = 'drupal.' . hash('sha256', 'drupal.' . $settings['hash_salt']);
  $apc_loader = new \Symfony\Component\ClassLoader\ApcClassLoader($prefix, $class_loader);
  unset($prefix);
  $class_loader->unregister();
   $apc_loader->register();
  $class_loader = $apc_loader;
}

Not too familiar with ApcClassLoader to know what the alternative is.

[dottodot]

Actually just seen this pull request #8