anchor.diff:      required this.textLineHeight,
     }) : super(key: key);
   
  -  final ValueNotifier<ClipboardStatus> clipboardStatus;
  +  final ValueListenable<ClipboardStatus> clipboardStatus;
     final TextSelectionDelegate delegate;
     final List<TextSelectionPoint> endpoints;
     final Rect globalEditableRegion;
  
positive.code:     Offset selectionMidpoint,
      List<TextSelectionPoint> endpoints,
      TextSelectionDelegate delegate,
      ValueNotifier<ClipboardStatus>? clipboardStatus,
      Offset? lastSecondaryTapDownPosition,
    ) {
      return _TextSelectionControlsToolbar(
  
negative.code: // Use of this source code is governed by a BSD-style license that can be
  // found in the LICENSE file.
  
  import 'package:flutter/foundation.dart';
  import 'package:flutter/material.dart' hide Stack;
  import 'package:flutter/rendering.dart';
  import 'package:provider/provider.dart';
  