def METHOD_NAME(self, wrapper):
    """
    Get the document root.  For I{document/literal}, this is the
    name of the wrapper element qualifed by the schema tns.
    @param wrapper: The method name.
    @type wrapper: L{xsd.sxbase.SchemaObject}
    @return: A root element.
    @rtype: L{Element}
    """
    tag = wrapper[1].name
    ns = wrapper[1].namespace('ns0')
    d = Element(tag, ns=ns)
    return d