Expanded class hierarchy of RelationHandlerInterface in Group 2.0.x
- interface \Drupal\group\Plugin\Group\RelationHandler\RelationHandlerInterface
- interface \Drupal\group\Plugin\Group\RelationHandler\AccessControlInterface
- interface \Drupal\group\Plugin\Group\RelationHandler\PermissionProviderInterface
- interface \Drupal\group\Plugin\Group\RelationHandler\PostInstallInterface