| Index: samples/swarm/swarm_ui_lib/observable/observable.dart
 | 
| diff --git a/samples/swarm/swarm_ui_lib/observable/observable.dart b/samples/swarm/swarm_ui_lib/observable/observable.dart
 | 
| index e3c249c540c638d0a3a3037687aae2cbf3102adc..002c757dd21e8a9f5eadeeb340b18068495a0eb5 100644
 | 
| --- a/samples/swarm/swarm_ui_lib/observable/observable.dart
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| +++ b/samples/swarm/swarm_ui_lib/observable/observable.dart
 | 
| @@ -269,7 +269,7 @@ class ObservableList<T>
 | 
|      throw new UnimplementedError();
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|    }
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|  
 | 
| -  List getRange(int start, int length) {
 | 
| +  Iterable getRange(int start, int end) {
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|      throw new UnimplementedError();
 | 
|    }
 | 
|  
 | 
| 
 |