apollo-portal/src/main/java/com/ctrip/framework/apollo/portal/api/AdminServiceAPI.java/AdminServiceAPI/rollback
class AdminServiceAPI:    public void rollback(Env env, long releaseId, String operator) {
      restTemplate.put(env,
          "releases/{releaseId}/rollback?operator={operator}",
          null, releaseId, operator);
    }