public FormStateInterface::addCleanValueKey($key)

public FormStateValuesTrait::unsetValue($key)

public FormStateDecoratorBase::setRequestMethod($method)

protected FormValidator::performRequiredValidation(&$elements, FormStateInterface

public FormStateInterface::clearErrors()

Stores information about the state of a subform. In the context of Drupal's Form API, a subform is a form definition array that will be nested

public FormBase::setConfigFactory(ConfigFactoryInterface $config_factory)

public FormStateInterface::setExecuted()

public FormStateInterface::setAlwaysProcess($always_process =

public FormState::setFormState(array $form_state_additions)