border property
      
      PdfAnnotationBorder
      get
      border
      
    
    
Gets annotation's border properties like width, horizontal radius etc.
Implementation
PdfAnnotationBorder get border {
  return _helper.border;
}
      
      set
      border
      (PdfAnnotationBorder value) 
      
    
    
Sets annotation's border properties like width, horizontal radius etc.
Implementation
set border(PdfAnnotationBorder value) {
  _helper.border = value;
}