Utility method to handle calls to IAM and parsing of responses.

def get_response(self, action, params, path='/', parent=None,
                     verb='GET', list_marker='Set'):
        """
        Utility method to handle calls to IAM and parsing of responses.
        """
        if not parent:
            parent = self
        response = self.make_request(action, params, path, verb)
        body = response.read()
        boto.log.debug(body)
        if response.status == 200:
            e = boto.jsonresponse.Element(list_marker=list_marker,
                                          pythonize_name=True)
            h = boto.jsonresponse.XmlHandler(e, parent)
            h.parse(body)
            return e
        else:
            boto.log.error('%s %s' % (response.status, response.reason))
            boto.log.error('%s' % body)
            raise self.ResponseError(response.status, response.reason, body)