Expanded class hierarchy of FormController in Drupal 8
- class \Drupal\Core\Controller\FormController uses DependencySerializationTrait
- class \Drupal\Core\Controller\HtmlFormController
- class \Drupal\Core\Entity\HtmlEntityFormController uses DeprecatedServicePropertyTrait
- class \Drupal\ctools\Controller\WizardFormController
- class \Drupal\node_clone\Controller\NodeCloneFormController uses StringTranslationTrait