public void modifyBackup(RdsClient rdsClient) {
        RdsModifyBackupRequest request = new RdsModifyBackupRequest();
        request.setInstanceId("rds-eI0QnwMi");
        // 以英文半角逗号分隔的备份时日间，周日为第一天，取值0。举例："0,1,2,3,4,5,6"
        request.setBackupDays("0,1,2,3,4,5");
        // 备份开始时间，使用UTC时间。举例："17:00:00Z"
        request.setBackupTime("20:09:00Z");
        // 持久化天数，范围7-730天；未启用则为0或不填
        // request.setExpireInDays();
        // 是否启用备份数据持久化
        request.setPersistent(false);
        AbstractBceResponse response = rdsClient.modifyBackup(request);
        print("modifyBackup", response);
    }

public void getBackupList(RdsClient rdsClient) {
        RdsGetBackupListRequest request = new RdsGetBackupListRequest();
        request.setInstanceId("rds-eI0QnwMi");
        // 批量获取列表的查询的起始位置，是一个由系统生成的字符串
        // request.setMarker("");
        // 每页包含的最大数量(主实例)，最大数量通常不超过1000，缺省值为1000。
        // request.setMaxKeys(100);
        RdsGetBackupListResponse backupList = rdsClient.getBackupList(request);
        print("getBackupList", backupList);
    }

public void getBackupInfo(RdsClient rdsClient) {
        RdsBackupInfoRequest request = new RdsBackupInfoRequest();
        // 备份id
        request.setBackupId("1658415617392906801");
        // 实例id
        request.setInstanceId("rds-eI0QnwMi");
        RdsBackupInfoResponse backupInfo = rdsClient.getBackupInfo(request);
        print("getBackupInfo", backupInfo);
    }