public EnforcedResponseException::__construct(Response

public &FormStateInterface::getStorage()

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

public FormStateDecoratorBase::getBuildInfo()

public FormState::setCached($cache = TRUE) Sets

public FormCache::getCache($form_build_id, FormStateInterface $form_state)

public FormStateValuesTrait::hasValue($key)

An associative array of values submitted to the form. The validation functions and submit functions use this array for nearly all their decision

public FormSubmitter::executeSubmitHandlers(&$form, FormStateInterface

The URL generator. Type: