protected FormErrorHandler::drupalSetMessage($message = NULL, $type

The route match. Type:

public static FormElementHelper::getElementByName($name, array $form)

public &FormStateInterface::getStorage()

public FormState::setInvalidToken($invalid_token) Flags

public FormState::setUserInput(array $user_input) Sets

public FormErrorHandler::handleFormErrors(array &$form, FormStateInterface

Provides an interface for handling form errors. Hierarchy interface \Drupal\Core\Form\

public ConfirmFormBase::buildForm(array $form, FormStateInterface $

public BrokenPostRequestException::