anchor.diff:  // BSD-style license that can be found in the LICENSE file.
   
   import 'dart:convert';
  +import 'dart:io' show Platform;
   import 'dart:isolate';
   
   import 'package:analyzer/dart/analysis/session.dart';
  
positive.code:                 expect(errors.errors, isEmpty);
                }, resolvers: AnalyzerResolvers()),
            ['non-nullable']);
      });
  
      test('can get a new analysis session after resolving additional assets',
          () async {
  
negative.code:     });
    });
  }
  
  final _skipOnPreRelease =
      Version.parse(Platform.version.split(' ').first).isPreRelease
          ? 'Skipped on prerelease sdks'
          : null;
  