public override SyntaxNode VisitNamespaceDeclaration(NamespaceDeclarationSyntax node)
        {
            var identifierName = SyntaxFactory.IdentifierName(_typeNamespace);
            var newNamespace = SyntaxFactory.NamespaceDeclaration(identifierName);

            var newNode =  node.Update(
                node.NamespaceKeyword,
                newNamespace.Name,
                node.OpenBraceToken,
                node.Externs,
                node.Usings,
                node.Members,
                node.CloseBraceToken,
                node.SemicolonToken);

            return base.VisitNamespaceDeclaration(newNode);
        }