anchor.diff:    String prefix;
     String postfix;
   
  -  int insertPos = -1;
  -
     PrePostDialogComponent(this._textProcessingService,
         this._textareaDomService);
   
  
positive.code:     txt = _textProcessingService.prefixLines(txt, prefix);
      txt = _textProcessingService.postfixLines(txt, postfix);
      note.text = txt;
    }
  }
negative.code:     showDialog = false;
      showDialogChange.emit(showDialog);
      _textareaDomService.setFocus();
    }
  
    performPrePost() {
  