function setupAutoUpdatePreference() {
        PreferencesManager.definePreference("autoUpdate.AutoUpdate", "boolean", true, {
            description: Strings.DESCRIPTION_AUTO_UPDATE
        });

        // Set or unset the auto update, based on preference state change
        PreferencesManager.on("change", "autoUpdate.AutoUpdate", function () {
            if (_isAutoUpdateEnabled()) {
                setupAutoUpdate();
                UpdateNotification.registerUpdateHandler(_updateProcessHandler);
            } else {
                unsetAutoUpdate();
                UpdateNotification.resetToDefaultUpdateHandler();
            }
        });
    }
Defines preference to enable/disable Auto Update