Provides access to configuration for forms. This trait provides a config() method that returns override free and mutable config objects if the

public FormStateDecoratorBase::setInvalidToken($inval

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

protected FormAjaxSubscriber::formatSize($size)

If TRUE, there is a file element and Form API will set the appropriate 'enctype' HTML attribute on the form. Type: bool

The subform. Type: mixed[] File core/lib/Drupal/Core/Form/SubformState

public FormStateInterface::setFormState(array $form_state_additions)

public FormStateDecoratorBase::isCached()

public FormStateDecoratorBase::setValidationComplete(

protected FormAjaxSubscriber::drupalSetMessage($message