Temporary add node to XDocument

Question

I need to create a temporary root node for an XDocument, but i need to do this without destroying the reference.

So the should still work

XElement x = doc.Root.FirstNode;
// Inset magic here that adds the "MyTempRoot"
Console.WriteLine(x.Name); // This should still work

Example

<elements>
    <item />
    <item />
    <item />
</elements>

To

<MyTempRoot>
    <elements>
        <item />
        <item />
        <item />
    </elements>
</MyTempRoot>

Answer 1

The following should be sufficient

doc.Root.ReplaceWith(new XElement("MyTempRoot", doc.Root));

Answer 2

Figured out a way

private void AddTempRoot(XDocument doc)
{
    XElement tempRoot= new XElement("MyTempRood");
    var elements = doc.Elements();
    foreach (var element in elements)
    {
        element.Remove();
        tempRoot.Add(element);
    }
    doc.Add(tempRoot);
}

private void RemoveTempRoot(XDocument doc)
{
    var tempRoot = doc.Root;
    tempRoot.Remove();
    var elements = tempRoot.Elements();
    foreach (var element in elements)
    {
        element.Remove();
        doc.Add(element);
    }
}