feedback property
      
      BarcodeSelectionFeedback
      get
      feedback
      
    
    
    
Implementation
BarcodeSelectionFeedback get feedback => _feedback;
      
      set
      feedback
      (BarcodeSelectionFeedback newValue) 
      
    
    
    
Implementation
set feedback(BarcodeSelectionFeedback newValue) {
  _feedback = newValue;
  _controller.updateMode();
}