How to name the outermost name tag in output XML?

[sk-surya]

Is there a way to change the outermost name tag of an XML output file?
I have an XML output of a class like this:
<?xml version="1.0" encoding="utf-8"?> <cereal> <Item> <ItemID>Item 1</ItemID> </Item> </cereal>

Here instead of 'cereal', I would like to have a custom name for it.