请问聚合查询如何将buckets里面每个key的hits平铺并且按照_score进行排序

{  

	"query": {

        "function_score": {

          "query": { 

              "multi_match": {

                  "query" : "apple"

              }

          }

        }

    },

    "size":0,

    "aggs": {

        "top_tags": {

            "terms": {

                "script" : {

                    "source": "doc['score'].value * 10 % 5"

                },

                "size": 5

            },

            "aggs": {

                "top_sales_hits": {

                    "top_hits": {

                        "_source": {

                            "includes": [ "spuId", "title"]

                        },

                        "size" : 2

                    }

                }

            }

        }

    }

}