   private static let instance = ThemeManager()
   private weak var timer: Timer?
   private var isDarkModeEnabled: Bool = false
+  private static let enableDarkModeBySystem = false
 
   private override init() {
     super.init()

          switch FrameworkHelper.daytime(at: MWMLocationManager.lastLocation()) {
          case .day: return .vehicleDay
          case .night: return .vehicleNight
          }
        }
      }
    }(theme)


      case .night: fallthrough
      case .vehicleNight: return true
      case .auto: assert(false); return false
      @unknown default:
        fatalError()
      }
    }(actualTheme)

