'Pass a call\'s response as the initial argument and a
generator is returned for the initial response and any
continuation call responses made using the NextToken.'

def iter_response(self, response):

    (yield response)
    more = self.method_for((response._action + 'ByNextToken'))
    while (more and (response._result.HasNext == 'true')):
        response = more(NextToken=response._result.NextToken)
        (yield response)
