private static Task<Document> GetTransformedDocumentAsync(Document document, SyntaxNode root, SimpleNameSyntax node)
        {
            var qualifiedExpression =
                SyntaxFactory.MemberAccessExpression(SyntaxKind.SimpleMemberAccessExpression, ThisExpressionSyntax, node.WithoutTrivia().WithoutFormatting())
                .WithTriviaFrom(node)
                .WithoutFormatting();

            var newSyntaxRoot = root.ReplaceNode(node, qualifiedExpression);

            return Task.FromResult(document.WithSyntaxRoot(newSyntaxRoot));
        }