public static void checkTenant(String tenant) throws NacosException {
        if (StringUtils.isBlank(tenant) || !ParamUtils.isValid(tenant)) {
            throw new NacosException(NacosException.CLIENT_INVALID_PARAM, TENANT_INVALID_MSG);
        }
    }
@Test
    void testCheckTenant() throws NacosException {
        String tenant = "a";
        ParamUtils.checkTenant(tenant);
    }