Expanded class hierarchy of WebformHandlerManagerInterface in Webform 6.x
- interface \Drupal\Component\Plugin\PluginManagerInterface; interface \Drupal\Component\Plugin\Discovery\CachedDiscoveryInterface; interface \Drupal\Component\Plugin\FallbackPluginManagerInterface; interface \Drupal\Component\Plugin\CategorizingPluginManagerInterface; interface \Drupal\webform\Plugin\WebformPluginManagerExcludedInterface
- interface \Drupal\webform\Plugin\WebformHandlerManagerInterface