[Simple-support] how to process an xml without element or attributes

[gato c. <da...@gm...>]

for example:

<node>321</node>

where 321 is the id of the node. node tag does not have attributes or
elements. it just has the 'id' value inside.

I tried with :

@Root
public class Node{
    //don't know how to annotate the id.
    private int id;
    public To(int id){
        this.id=id;
    }
}

thanks for the help.