semanatic application in flutter

import 'package:flutter/material.dart';import 'package:cached_network_image/cached_network_image.dart';import 'package:flutter_semantics_demo/themes/device_size.dart';class SemanticsWidgetDemo extends StatefulWidget {  @override  _SemanticsWidgetDemoState createState() => _SemanticsWidgetDemoState();}class _SemanticsWidgetDemoState extends State<SemanticsWidgetDemo> {  @override  Widget build(BuildContext context) {    return Scaffold(      appBar: AppBar(        title: Text('Semantics Widget Demo'),      ),      body: Container(        height: DeviceSize.height(context),        width: DeviceSize.width(context),        child: Column(          mainAxisAlignment: MainAxisAlignment.spaceAround,          children: [            Column(              children: [                Text(                  'Semantics Widget',                  style: TextStyle(fontSize: 17, fontWeight: FontWeight.w600),                ),                SizedBox(                  height: 20,                ),                Semantics(                  child: ClipOval(                    child: CircleAvatar(                      maxRadius: 70,                      child: CachedNetworkImage(                        imageUrl: 'https://picsum.photos/250?image=9',                        height: DeviceSize.height(context),                        width: DeviceSize.width(context),                        fit: BoxFit.cover,                      ),                    ),                  ),                  label: 'Company logo',                ),              ],            ),            Column(              children: [                Text(                  'MergeSemantics',                  style: TextStyle(fontSize: 17, fontWeight: FontWeight.w600),                ),                SizedBox(                  height: 20,                ),                MergeSemantics(                  child: Column(                    mainAxisAlignment: MainAxisAlignment.spaceEvenly,                    children: <Widget>[                      ListTile(                        leading:                            Icon(Icons.account_circle, semanticLabel: 'name'),                        title: Text(                          "John Doe",                          style: TextStyle(color: Colors.blue),                        ),                        onTap: () {},                      ),                      ListTile(                        leading: Icon(                          Icons.email,                          semanticLabel: 'email',                        ),                        title: Text(                          "[email protected]",                          style: TextStyle(color: Colors.blue),                        ),                        onTap: () {},                      ),                      ListTile(                        leading:                            Icon(Icons.business, semanticLabel: 'company name'),                        title: Text(                          "ABC Inc.",                          style: TextStyle(color: Colors.blue),                        ),                        onTap: () {},                      ),                    ],                  ),                ),              ],            ),          ],        ),      ),    );  }}