protected FormState::isRequestMethodSafe() Checks

public FormBuilderInterface::rebuildForm($form_id, FormStateInterface

public FormStateInterface::setRedirect($route_name, array $route_parameters

callback_batch_finished($success, $results, $operations) Complete a batch process. Callback

public FormState::setStorage(array $storage) Sets

TRUE signifies correct form submission. This is always TRUE for programmed forms coming from

public FormState::isExecuted() Determines

public FormState::setInvalidToken($invalid_token) Flags

public FormState::isRedirectDisabled() Determines

If set to TRUE the original, unprocessed form structure will be cached, which allows the entire form to be rebuilt from cache. A typical form workflow involves two page requests;