header property
      
      BarcodeArInfoAnnotationHeader?
      get
      header
      
    
    
    
Implementation
BarcodeArInfoAnnotationHeader? get header => _header;
      
      set
      header
      (BarcodeArInfoAnnotationHeader? newValue) 
      
    
    
    
Implementation
set header(BarcodeArInfoAnnotationHeader? newValue) {
  _header?.removeListener(_onHeaderFooterChange);
  _header = newValue;
  _header?.addListener(_onHeaderFooterChange);
  controller?.updateAnnotation(this);
}