Expanded class hierarchy of PluginNotFoundException in Drupal 9

class \Drupal\Component\Plugin\Exception\PluginException extends \Drupal\Component\Plugin\Exception\Exception implements ExceptionInterface
- class \Drupal\Component\Plugin\Exception\InvalidDeriverException
- class \Drupal\Component\Plugin\Exception\InvalidPluginDefinitionException
- class \Drupal\Component\Plugin\Exception\PluginNotFoundException
  - class \Drupal\imageapi_optimize\Exception\PluginNotFoundException

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