Expanded class hierarchy of YamlFormHandlerMessageInterface in YAML Form 8
- interface \Drupal\Component\Plugin\PluginInspectionInterface; interface \Drupal\Component\Plugin\ConfigurablePluginInterface; interface \Drupal\Core\Plugin\ContainerFactoryPluginInterface; interface \Drupal\Core\Plugin\PluginFormInterface
- interface \Drupal\yamlform\YamlFormHandlerInterface
- interface \Drupal\yamlform\YamlFormHandlerMessageInterface
- interface \Drupal\yamlform\YamlFormHandlerInterface