Expanded class hierarchy of FormatterInterface in Drupal 8
- interface \Drupal\Component\Plugin\PluginInspectionInterface; interface \Drupal\Core\Config\Entity\ThirdPartySettingsInterface
- interface \Drupal\Core\Field\PluginSettingsInterface
- interface \Drupal\Core\Field\FormatterInterface
- interface \Drupal\fb_instant_articles\Plugin\Field\InstantArticleFormatterInterface
- interface \Drupal\Core\Field\WidgetBaseInterface
- interface \Drupal\Core\Field\FormatterInterface
- interface \Drupal\Core\Field\PluginSettingsInterface