Provides an interface for validating form submissions. Hierarchy interface \Drupal\Core\Form\

public FormStateInterface::setValidationEnforced($must_validate

public FormStateInterface::setStorage(array $storage)

The config factory. Subclasses should use the self::config() method, which may be overridden to address specific needs when loading config,

public FormState::addCleanValueKey($cleanValueKey) Adds

public FormState::getResponse() Gets a response

The request stack. Type: \Symfony\Component\HttpFoundation\RequestStack File

public FormStateDecoratorBase::setRebuildInfo(array $

public FormStateDecoratorBase::getCacheableArray()

protected ConfigFormBaseTrait::config($name)