Expanded class hierarchy of GroupRelationInterface in Group 2.0.x
- interface \Drupal\Component\Plugin\PluginInspectionInterface; interface \Drupal\Component\Plugin\DerivativeInspectionInterface; interface \Drupal\Component\Plugin\ConfigurableInterface; interface \Drupal\Component\Plugin\DependentPluginInterface; interface \Drupal\Core\Plugin\PluginFormInterface
- interface \Drupal\group\Plugin\Group\Relation\GroupRelationInterface