title: Flutter ChangeNotifierProxyProvider ChangeNotifier in create needs arguments
body: <p>I am in the process of programming my app and need to use a ChangeNotifierProxyProvider. Unfortunately my ChangeNotifier (in this case Entries) needs 3 positional arguments. I already managed to specify the arguments in update, but how can I do it in create?</p>
  <p>I would be very happy about an answer, because I can't find anything on the internet.</p>
  <p>Hey!
  I am in the process of programming my app and need to use a ChangeNotifierProxyProvider. Unfortunately my ChangeNotifier (in this case Entries) needs 3 positional arguments. I already managed to specify the arguments in update, but how can I do it in create?</p>
  <p>I would be very happy about an answer, because I can't find anything on the internet.</p>
  <p>Here is my code for the providers: []:</p>
  <pre><code>providers: [
     ChangeNotifierProvider.value(value: Auth()),
     ChangeNotifierProxyProvider&lt;Auth, Entries&gt;(
        create: (_) =&gt; Entries(),
        update: (_, auth, previousEntries) =&gt; Entries(
          auth.token,
          auth.userId,
          previousEntries == null ? [] : previousEntries.items,
       ),
     ),
  ], 
  </code></pre>