anchor.diff:      });
     });
   }
  +
  +final _skipOnPreRelease =
  +    Version.parse(Platform.version.split(' ').first).isPreRelease
  +        ? 'Skipped on prerelease sdks'
  +        : null;
  
positive.code:                 expect(errors.errors, isEmpty);
                }, resolvers: AnalyzerResolvers()),
            ['non-nullable']);
      });
  
      test('can get a new analysis session after resolving additional assets',
          () async {
  
negative.code:         }, (resolver) async {
            await resolver.libraryFor(entryPoint);
          }, resolvers: AnalyzerResolvers());
        }, skip: _skipOnPreRelease);
      });
  
      group('assets that aren\'t a transitive import of input', () {
  