protected FormBase::configFactory() Gets the

public FormStateDecoratorBase::has($property)

public FormState::setTemporary(array $temporary) Sets

public FormState::getTemporary() Gets temporary

public FormStateInterface::setValueForElement(array $element,

protected FormAjaxSubscriber::drupalSetMessage($message

public FormState::isProcessingInput() Determines

Provides an interface for a Form. Hierarchy interface \Drupal\Core\Form\

public FormState::setProgrammedBypassAccessCheck($programmed_bypass_access_check

public FormStateInterface::loadInclude($module, $type, $name =