title: Flutter ChangeNotifierProvider builder is deprecated
body: <p>I have this code in my main.dart:</p>
  
  <pre><code>main() {
    runApp(
      MultiProvider(
        providers: [
          ChangeNotifierProvider(builder: (context) =&gt; Auth()), // /**problem here. builder displayed with strikethrough line**/
        ],
        child: App(),
      ),
    );
  }
  </code></pre>
  
  <p>since about 2 days ago, my visual studio code showing this warning:</p>
  
  <p><a href="https://i.stack.imgur.com/7hSyw.png" rel="noreferrer"><img src="https://i.stack.imgur.com/7hSyw.png" alt="enter image description here"></a></p>
  
  <p>so I guess builder parameter on ChangeNotifierProvider is deprecated. I searched everywhere but can't find alternative to this builder parameter. So how to remove these warning? Below is my flutter version using <code>flutter --version</code> command on Windows 10</p>
  
  <pre><code>&gt; flutter --version
  Flutter 1.9.1+hotfix.6 • channel stable • https://github.com/flutter/flutter.git
  Framework • revision 68587a0916 (3 months ago) • 2019-09-13 19:46:58 -0700
  Engine • revision b863200c37
  Tools • Dart 2.5.0
  </code></pre>
  
  <p>For any help, thanks in advance</p>