Expanded class hierarchy of HtmlFormController in Drupal 9
- class \Drupal\Core\Controller\FormController uses DependencySerializationTrait
- class \Drupal\Core\Controller\HtmlFormController
- class \Drupal\Core\Entity\HtmlEntityFormController
- class \Drupal\layout_builder\Controller\LayoutBuilderHtmlEntityFormController uses DependencySerializationTrait
- class \Drupal\layout_builder_decoration_test\Controller\LayoutBuilderDecorationTestHtmlEntityFormController