public override async Task <SyntaxNode> CleanUpAsync(SyntaxNode initialSourceNode) { var syntaxRewriter = new Rewriter(ProjectItemDetails.SemanticModel, IsReportOnlyMode , Options); var modifiedSourceNode = syntaxRewriter.ConvertFullNameTypesToBuiltInTypesHelper(initialSourceNode); if (IsReportOnlyMode) { CollectMessages(syntaxRewriter.GetReport()); return(initialSourceNode); } return(modifiedSourceNode); }