anchor.diff:  // Copyright 2020 The Chromium Authors. All rights reserved.
   // Use of this source code is governed by a BSD-style license that can be
   // found in the LICENSE file.
  -
  -// @dart=2.9
   
   import 'package:devtools_shared/devtools_shared.dart';
   import 'package:flutter/material.dart';
  
positive.code: }
  
  class MemoryAndroidChart extends StatefulWidget {
    const MemoryAndroidChart(this.chartController, {Key key}) : super(key: key);
  
    final AndroidChartController chartController;
  
  
negative.code:   /// Controller attached to the chart.
    AndroidChartController get _chartController => widget.chartController;
  
    bool _initialized = false;
  
    /// Controller for managing memory collection.
    late MemoryController _memoryController;
  
    MemoryTimeline get _memoryTimeline => _memoryController.memoryTimeline;
  
    @override
    void initState() {
  