The theme handler. Type:

public ConfigSingleImportForm::buildForm(array

The event dispatcher. Type: \Symfony\Component\EventDispatcher\EventDispatcherInterface File

The renderer service. Type:

public ConfigSingleImportForm::validateForm(array

public ConfigSingleImportForm::getFormId()

The submitted data needing to be confirmed. Type:

public ConfigSingleImportForm::submitForm(array

If the config exists, this is that object. Otherwise, FALSE. Type: \Drupal\Core\Config\Config|\Drupal\Core\Config\Entity\C

public ConfigSingleImportForm::getCancelUrl()