Expanded class hierarchy of PluginFormBase in Drupal 9
- class \Drupal\Core\Plugin\PluginFormBase implements PluginAwareInterface, PluginFormInterface
- class \Drupal\block_test\PluginForm\EmptyBlockForm
- class \Drupal\settings_tray_test\Form\SettingsTrayFormAnnotationIsClassBlockForm
- class \Drupal\system\Form\SystemBrandingOffCanvasForm implements ContainerInjectionInterface uses StringTranslationTrait
- class \Drupal\system\Form\SystemMenuOffCanvasForm implements ContainerInjectionInterface uses RedirectDestinationTrait, StringTranslationTrait