public TopicPropGroup fillDefaultValue() {
        this.numTopicStores = TServerConstants.TOPIC_STOREBLOCK_NUM_MIN;
        this.numPartitions = TServerConstants.TOPIC_PARTITION_NUM_MIN;
        this.unflushThreshold = TServerConstants.TOPIC_DSK_UNFLUSHTHRESHOLD_DEF;
        this.unflushInterval = TServerConstants.TOPIC_DSK_UNFLUSHINTERVAL_DEF;
        this.unflushDataHold = TServerConstants.TOPIC_DSK_UNFLUSHDATAHOLD_MIN;
        this.memCacheMsgSizeInMB = TServerConstants.TOPIC_CACHESIZE_MB_DEF;
        this.memCacheFlushIntvl = TServerConstants.TOPIC_CACHEINTVL_DEF;
        this.memCacheMsgCntInK = TServerConstants.TOPIC_CACHECNT_INK_DEF;
        this.acceptPublish = true;
        this.acceptSubscribe = true;
        this.deletePolicy = TServerConstants.TOPIC_POLICY_DEF;
        this.retPeriodInMs = TServerConstants.TOPIC_RET_PERIOD_IN_SEC_DEF;
        return this;
    }
fill fields with default value

@return object
inlong-tubemq/tubemq-server/src/main/java/org/apache/inlong/tubemq/server/master/metamanage/metastore/dao/entity/TopicPropGroup.java