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

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