public static String getKey(String dataId, String group) {
        StringBuilder sb = new StringBuilder();
        GroupKey.urlEncode(dataId, sb);
        sb.append('+');
        GroupKey.urlEncode(group, sb);
        return sb.toString();
    }
@Test
    public void getKeyTenantIdentifyTest() {
        String key = Md5ConfigUtil.getKey("DataId", "Group", "Tenant", "Identify");
        Assert.isTrue(Objects.equals("DataId+Group+Tenant+Identify", key));
    }