anchor.diff:        null);
   
     final DartCompletionRequest request;
  -  bool typesOnly = false;
  -  bool excludeVoidReturn;
  -
  -  _LocalVisitor(this.request, int offset) : super(offset) {
  -    excludeVoidReturn = _computeExcludeVoidReturn(request.node);
  -  }
  +  final bool typesOnly;
  +  final bool excludeVoidReturn;
  +
  +  _LocalVisitor(this.request, int offset, this.typesOnly,
  +      this.excludeVoidReturn)
  +      : super(offset);
   
     @override
     void declaredClass(ClassDeclaration declaration) {
  
positive.code:       parameters = declaration.parameters.toSource();
      }
      bool isDeprecated = _isDeprecated(declaration);
      CompletionSuggestion suggestion = _addSuggestion(
          declaration.name,
          returnType,
          declaration.parent,
          isDeprecated);
      if (suggestion != null) {
        suggestion.element = _createElement(
            kind,
  
negative.code:     return null;
    }
  
  
    /**
     * Create a new protocol Element for inclusion in a completion suggestion.
  