The class resolver. Type:

Defines element value callables which are safe to run even when the form state has an invalid CSRF token. Excluded from this list on purpose:

public FormBuilder::processForm($form_id, &$form, FormStateInterface &a

protected FormBuilder::currentUser() Gets

public FormBuilder::rebuildForm($form_id, FormStateInterface &$form_state

public FormBuilder::__construct(FormValidatorInterface $form_validator, FormSubmitterInterface

The form cache. Type:

public FormBuilder::buildForm($form_id, FormStateInterface &$form_state)

The CSRF token generator to validate the form token. Type:

Provides form building and processing. Hierarchy class \Drupal\Core\Form\