anchor.diff:  import 'package:analyzer/src/summary/summarize_ast.dart';
   import 'package:analyzer/src/summary/summarize_elements.dart';
   import 'package:analyzer/src/summary/summary_sdk.dart' show SummaryBasedDartSdk;
  +import 'package:analyzer/src/summary2/link.dart' as summary2;
  +import 'package:analyzer/src/summary2/linked_bundle_context.dart' as summary2;
  +import 'package:analyzer/src/summary2/linked_element_factory.dart' as summary2;
  +import 'package:analyzer/src/summary2/reference.dart' as summary2;
   import 'package:analyzer_cli/src/context_cache.dart';
   import 'package:analyzer_cli/src/driver.dart';
   import 'package:analyzer_cli/src/error_formatter.dart';
  
positive.code: 
  import 'package:analyzer/dart/analysis/declared_variables.dart';
  import 'package:analyzer/dart/analysis/results.dart';
  import 'package:analyzer/error/error.dart';
  import 'package:analyzer/file_system/file_system.dart';
  import 'package:analyzer/src/dart/analysis/byte_store.dart';
  
negative.code:       summaryDataStore.addBundle(null, sdkBundle);
      });
  
      sourceFactory = new SourceFactory(<UriResolver>[
        new DartUriResolver(sdk),
        new TrackingInSummaryUriResolver(
            new InSummaryUriResolver(resourceProvider, summaryDataStore),
  