basic state management

lib/extensions/obtainProviderExtension.dart

@@ -0,0 +1,8 @@
+import 'package:flutter/material.dart';
+import 'package:provider/provider.dart';
+
+extension ObtainProviderExtension on BuildContext {
+  T obtainState<T extends ChangeNotifier>() {
+    return Provider.of<T>(this, listen: false);
+  }
+}