public FormStateInterface::setAlwaysProcess($always_process =

public FormStateInterface::prepareCallback($callback)

public FormStateInterface::getFormObject()

public FormStateInterface::getTemporary()

public FormStateInterface::isSubmitted()

public FormStateInterface::clearErrors()

public FormStateInterface::getLimitValidationErrors()

public FormStateInterface::addCleanValueKey($key)

public FormStateInterface::setValidationEnforced($must_validate

public FormStateInterface::setErrorByName($name, $message = '')