public FormStateInterface::prepareCallback($callback)

public &FormStateInterface::getGroups()

public FormStateInterface::setValidationEnforced($must_validate

public FormStateInterface::isSubmitted()

public FormStateInterface::setStorage(array $storage)

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

public static FormStateInterface::hasAnyErrors()

public FormStateInterface::getLimitValidationErrors()

public FormStateInterface::addCleanValueKey($key)

public FormStateInterface::clearErrors()