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															+import 'package:example/home/demo_item.dart'; 
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															+import 'package:flutter/material.dart'; 
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															+ 
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															+class HomeScreen extends StatelessWidget { 
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															+  const HomeScreen({Key? key}) : super(key: key); 
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															+ 
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															+  static List<ListItem> items = [ 
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															+    SectionHeaderItem('Widget Demos'), 
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															+  ]; 
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															+ 
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															+  @override 
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															+  Widget build(BuildContext context) { 
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															+    return Scaffold( 
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															+      appBar: AppBar( 
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															+        title: const Text('Demos'), 
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															+      ), 
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															+      body: ListView.builder( 
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															+        itemCount: items.length, 
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															+        itemBuilder: (context, index) { 
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															+          final item = items[index]; 
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															+          if (item is SectionHeaderItem) { 
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															+            return Container( 
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															+              constraints: const BoxConstraints(maxHeight: 48.0), 
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															+              color: Colors.grey[300], 
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															+              alignment: Alignment.center, 
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															+              child: ListTile( 
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															+                title: Text(item.title), 
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															+              ), 
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															+            ); 
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															+          } else if (item is DemoItem) { 
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															+            return ListTile( 
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															+              title: Text(item.buildTitle()), 
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															+              onTap: item.handleTap, 
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															+            ); 
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															+          } 
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															+          return const ListTile( 
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															+            title: Text('Unknow.'), 
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															+          ); 
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															+        }, 
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															+      ), 
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															+    ); 
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															+  } 
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															+} 
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