Expanded class hierarchy of WidgetBaseInterface in Drupal 9
- interface \Drupal\Component\Plugin\PluginInspectionInterface; interface \Drupal\Core\Config\Entity\ThirdPartySettingsInterface
- interface \Drupal\Core\Field\PluginSettingsInterface
- interface \Drupal\Core\Field\FormatterInterface
- interface \Drupal\Core\Field\WidgetBaseInterface
- interface \Drupal\Core\Field\WidgetInterface
- interface \Drupal\Core\Field\PluginSettingsInterface