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

public DateFormatDeleteForm::getQuestion()

public ImageToolkitForm::validateForm(array &$form

protected DateFormatEditForm::actions(array $form,

protected ThemeSettingsForm::validatePath($path)

protected FileSystemForm::getEditableConfigNames()

public ModulesListConfirmForm::getDescription()

The module installer service. Type:

public ModulesUninstallForm::buildForm(array $form

public DateFormatFormBase::submitForm(array &$form