SpinKitHourGlass constructor
      const
      SpinKitHourGlass({ 
    
    
- Key? key,
 - required Color color,
 - double size = 50.0,
 - Duration duration = const Duration(milliseconds: 1200),
 - AnimationController? controller,
 
Implementation
const SpinKitHourGlass({
  Key? key,
  required this.color,
  this.size = 50.0,
  this.duration = const Duration(milliseconds: 1200),
  this.controller,
}) : super(key: key);