如何计算嵌套在date_histogram中的术语聚合中的cumulative_sum [elastic search - 5.6]？

POST /your_index/_search
{
  "size": 0,
  "aggs": {
    "date_buckets": {
      "date_histogram": {
        "field": "your_date_field",
        "interval": "day"
      },
      "aggs": {
        "term_buckets": {
          "terms": {
            "field": "your_term_field"
          },
          "aggs": {
            "bucket_selector": {
              "bucket_selector": {
                "buckets_path": {
                  "cumulativeSum": "cumulative_sum_bucket>your_cumulative_sum_field"
                },
                "script": "params.cumulativeSum >= your_threshold_value"
              },
              "aggs": {
                "cumulative_sum_bucket": {
                  "cumulative_sum": {
                    "buckets_path": "your_cumulative_sum_field"
                  }
                }
              }
            }
          }
        }
      }
    }
  }
}