public FormState::setValidateHandlers(array $validate_handlers)

Normally, after the entire form processing is completed and submit handlers have run, a form is considered to be done and

public &FormStateDecoratorBase::getGroups()

public FormStateDecoratorBase::setGroups(array $groups)

Stores information about the state of a form. Hierarchy class \Drupal\Core\Form\

public &FormState::getGroups() Returns

The config factory. Type:

public FormBuilderInterface::buildForm($form_id, FormStateInterface

An associative array of form value keys to be removed by cleanValues(). Any values that are temporary but must still be displayed as values

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