protected function makeSettingManagedInConfigOnly($configSectionName, $name, $defaultValue, $type, $fieldConfigCallback)
    {
        $setting = new SystemConfigSetting($name, $defaultValue, $type, $this->pluginName, $configSectionName);
        $setting->setConfigureCallback($fieldConfigCallback);
        $this->addSetting($setting);
        return $setting;
    }