All classes that implement FruitInterface in Drupal 9
- class \Drupal\plugin_test\Plugin\plugin_test\fruit\Apple implements FruitInterface
- class \Drupal\plugin_test\Plugin\plugin_test\fruit\Banana implements FruitInterface
- class \Drupal\plugin_test\Plugin\plugin_test\fruit\Cherry implements FruitInterface
- class \Drupal\plugin_test\Plugin\plugin_test\fruit\Orange implements FruitInterface