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);
}