LazyPluginCollection

class \Drupal\Component\Plugin\LazyPluginCollection implements \Drupal\Component\Plugin\IteratorAggregate, \Drupal\Component\Plugin\Countable
- class \Drupal\Core\Plugin\DefaultLazyPluginCollection extends \Drupal\Component\Plugin\LazyPluginCollection uses \Drupal\Core\DependencyInjection\DependencySerializationTrait
- class \Drupal\Core\Plugin\DefaultSingleLazyPluginCollection extends \Drupal\Component\Plugin\LazyPluginCollection uses \Drupal\Core\DependencyInjection\DependencySerializationTrait