'Create a role inference rule.'

def create_role_inference_rule(self, prior_role, implies_role):

    (resp, body) = self.put(('roles/%s/implies/%s' % (prior_role, implies_role)), None)
    self.expected_success(201, resp.status)
    body = json.loads(body)
    return rest_client.ResponseBody(resp, body)
