Expanded class hierarchy of AutosaveFormErrorHandler in Autosave Form 8
- class \Drupal\Core\Form\FormErrorHandler implements FormErrorHandlerInterface uses MessengerTrait
- class \Drupal\autosave_form\Form\AutosaveFormErrorHandler uses AutosaveButtonClickedTrait
- class \Drupal\inline_form_errors\FormErrorHandler uses StringTranslationTrait