| Index: test/codegen/expect/collection/src/unmodifiable_wrappers.txt | 
| diff --git a/test/codegen/expect/collection/src/unmodifiable_wrappers.txt b/test/codegen/expect/collection/src/unmodifiable_wrappers.txt | 
| index 8074c8cca506318ba4a0c5d19ec1cc4f1edd9a4a..1928f1adbf98026bb24d648733653380def91e5d 100644 | 
| --- a/test/codegen/expect/collection/src/unmodifiable_wrappers.txt | 
| +++ b/test/codegen/expect/collection/src/unmodifiable_wrappers.txt | 
| @@ -1,5 +1,7 @@ | 
| // Messages from compiling unmodifiable_wrappers.dart | 
| -warning: [DownCastComposite] _throw() (dynamic) will need runtime check to cast to type E (package:collection/src/unmodifiable_wrappers.dart, line 88, col 28) | 
| -warning: [DownCastComposite] _throw() (dynamic) will need runtime check to cast to type E (package:collection/src/unmodifiable_wrappers.dart, line 94, col 21) | 
| -warning: [DownCastComposite] _throw() (dynamic) will need runtime check to cast to type V (package:collection/src/unmodifiable_wrappers.dart, line 218, col 41) | 
| -warning: [DownCastComposite] _throw() (dynamic) will need runtime check to cast to type V (package:collection/src/unmodifiable_wrappers.dart, line 230, col 27) | 
| +severe: [AnalyzerMessage] Missing concrete implementation of 'Iterable.map' and 'Iterable.expand' (package:collection/src/unmodifiable_wrappers.dart, line 33, col 7) | 
| +severe: [AnalyzerMessage] Missing concrete implementation of 'Iterable.map' and 'Iterable.expand' (package:collection/src/unmodifiable_wrappers.dart, line 136, col 7) | 
| +warning: [_DOWN_CAST_COMPOSITE] _throw() (dynamic) will need runtime check to cast to type E (package:collection/src/unmodifiable_wrappers.dart, line 88, col 28) | 
| +warning: [_DOWN_CAST_COMPOSITE] _throw() (dynamic) will need runtime check to cast to type E (package:collection/src/unmodifiable_wrappers.dart, line 94, col 21) | 
| +warning: [_DOWN_CAST_COMPOSITE] _throw() (dynamic) will need runtime check to cast to type V (package:collection/src/unmodifiable_wrappers.dart, line 218, col 41) | 
| +warning: [_DOWN_CAST_COMPOSITE] _throw() (dynamic) will need runtime check to cast to type V (package:collection/src/unmodifiable_wrappers.dart, line 230, col 27) | 
|  |