anchor.diff:  import 'package:analyzer/file_system/physical_file_system.dart';
   import 'package:analyzer/src/dart/analysis/byte_store.dart';
   import 'package:analyzer/src/dart/analysis/driver_based_analysis_context.dart';
  +import 'package:analyzer/src/dartdoc/dartdoc_directive_info.dart';
   import 'package:analyzer/src/generated/engine.dart';
   import 'package:analyzer/src/services/available_declarations.dart';
   import 'package:args/args.dart';
  
positive.code: 
      if (declarationsTracker == null) {
        // available suggestions == false
        suggestions =
            await DartCompletionManager().computeSuggestions(completionRequest);
      } else {
        // available suggestions == true
        var includedElementKinds = <ElementKind>{};
  
negative.code:           <IncludedSuggestionRelevanceTag>[];
        var includedSuggestionSetList = <IncludedSuggestionSet>[];
        suggestions = await DartCompletionManager(
                dartdocDirectiveInfo: DartdocDirectiveInfo(),
                includedElementKinds: includedElementKinds,
                includedElementNames: includedElementNames,
                includedSuggestionRelevanceTags:
  