The menu description. Type: string File core/module

A cache backend interface. Type:

public ModulesListForm::submitForm(array &$form, FormStateInterface

public ImageToolkitForm::validateForm(array &$form

An array of configuration names that should be editable. Type:

public ModulesUninstallForm::buildForm(array $form

protected FileSystemForm::getEditableConfigNames()

public SystemController::compactPage($mode)

public SystemManager::getAdminBlock(MenuLinkInterface $instance)

The app root. Type: string File core/modules/system