public FormBuilder::__construct(FormValidatorInterface $form_validator, FormSubmitterInterface

Provides an interface for form building and processing. Hierarchy interface \Drupal\Core\Form\

public static OptGroup::flattenOptions(array $array) Allows

public FormStateInterface::setStorage(array $storage)

public FormState::addRebuildInfo($property, $value) Adds

public FormStateValuesTrait::isValueEmpty($key)

public FormState::isCached() Determines

public FormState::hasFileElement() Returns

public ConfigFormBase::buildForm(array $form, FormStateInterface $for

public FormStateInterface::isSubmitted()