SnackbarHandler constructor
      
      SnackbarHandler(
    
    
- Duration duration, {
 - Color? backgroundColor,
 - double? elevation,
 - EdgeInsetsGeometry? margin,
 - EdgeInsetsGeometry? padding,
 - double? width,
 - ShapeBorder? shape,
 - SnackBarBehavior? behavior,
 - SnackBarAction? action,
 - Animation<
double> ? animation, - VoidCallback? onVisible,
 - String? customMessage,
 - TextStyle? textStyle,
 - bool printLogs = false,
 
Implementation
SnackbarHandler(
  this.duration, {
  this.backgroundColor,
  this.elevation,
  this.margin,
  this.padding,
  this.width,
  this.shape,
  this.behavior,
  this.action,
  this.animation,
  this.onVisible,
  this.customMessage,
  this.textStyle,
  this.printLogs = false,
});