| Index: frog/lib/date_implementation.dart | 
| diff --git a/frog/lib/date_implementation.dart b/frog/lib/date_implementation.dart | 
| index bab2e4572c5bff318f9061154d516d2f1cd59aca..5dc70f018d3a4aa87b3e32f0d9b4ee4f58d44d80 100644 | 
| --- a/frog/lib/date_implementation.dart | 
| +++ b/frog/lib/date_implementation.dart | 
| @@ -127,6 +127,9 @@ class DateImplementation implements Date { | 
| return new Date.fromEpoch(value, targetTimeZone); | 
| } | 
|  | 
| +  String get timeZoneName() { throw "Unimplemented"; } | 
| +  Duration get timeZoneOffset() { throw "Unimplemented"; } | 
| + | 
| int get year() native | 
| '''return this.isUtc() ? this._asJs().getUTCFullYear() : | 
| this._asJs().getFullYear();''' { | 
|  |