anchor.diff:    /// The relevance data being collected.
     final RelevanceData data;
   
  +  /// The object used to determine Flutter-specific features.
  +  Flutter flutter;
  +
     InheritanceManager3 inheritanceManager = InheritanceManager3();
   
     /// The library containing the compilation unit being visited.
  
positive.code:   /// [data].
    RelevanceDataCollector(this.data);
  
    @override
    void visitAdjacentStrings(AdjacentStrings node) {
      // There are no completions.
  
negative.code: import 'package:_fe_analyzer_shared/src/base/syntactic_entity.dart';
  import 'package:analysis_server/src/protocol_server.dart'
      show convertElementToElementKind, ElementKind;
  import 'package:analysis_server/src/utilities/flutter.dart';
  import 'package:analyzer/dart/analysis/analysis_context_collection.dart';
  import 'package:analyzer/dart/analysis/results.dart';
  import 'package:analyzer/dart/ast/ast.dart';
  