FadeOutLeft constructor
      
      FadeOutLeft({ 
    
    
- dynamic key,
 - required Widget child,
 - Duration duration = const Duration(milliseconds: 800),
 - Duration delay = const Duration(milliseconds: 0),
 - dynamic controller()?,
 - bool manualTrigger = false,
 - bool animate = false,
 - double from = 100,
 - dynamic onFinish(
- AnimateDoDirection direction
 
 - Curve curve = Curves.easeOut,
 
Implementation
FadeOutLeft({
  key,
  required this.child,
  this.duration = const Duration(milliseconds: 800),
  this.delay = const Duration(milliseconds: 0),
  this.controller,
  this.manualTrigger = false,
  this.animate = false,
  this.from = 100,
  this.onFinish,
  this.curve = Curves.easeOut,
}) : super(key: key) {
  if (manualTrigger == true && controller == null) {
    throw FlutterError('If you want to use manualTrigger:true, \n\n'
        'Then you must provide the controller property, that is a callback like:\n\n'
        ' ( controller: AnimationController) => yourController = controller \n\n');
  }
}