'Check an association between a policy and region+service.'

@controller.protected()
def check_policy_association_for_region_and_service(self, request, policy_id, service_id, region_id):

    self.policy_api.get_policy(policy_id)
    self.catalog_api.get_service(service_id)
    self.catalog_api.get_region(region_id)
    self.endpoint_policy_api.check_policy_association(policy_id, service_id=service_id, region_id=region_id)
