Parameters:
           elt -- the current DOMWrapper element 
           sw -- soapWriter object
           pyobj -- python object to serialize

def serialize(self, elt, sw, pyobj, name=None, orig=None, **kw):
        '''
        Parameters:
           elt -- the current DOMWrapper element 
           sw -- soapWriter object
           pyobj -- python object to serialize

        '''
        raise EvaluateException("Unimplemented evaluation", sw.Backtrace(elt))