public boolean isAlwaysFalse() {
        if (conditions.isEmpty()) {
            return false;
        }
        for (ShardingCondition each : conditions) {
            if (!(each instanceof AlwaysFalseShardingCondition)) {
                return false;
            }
        }
        return true;
    }
@Test
    void assertIsAlwaysFalseTrue() {
        ShardingConditions shardingConditions = createSingleShardingConditions();
        assertTrue(shardingConditions.isAlwaysFalse());
    }