DSL buckets aggregations

Plugins Alerting
1

Hello,

i’m using DSL aggregations to extract some data from elasticsearch. The result of my query is the following :

"aggregations" : {
    "IP_source" : {
      "doc_count_error_upper_bound" : 83,
      "sum_other_doc_count" : 4797,
      "buckets" : [
        {
          "key" : "192.168.23.3",
          "doc_count" : 698,
          "IP_destination" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [ ]
          }
        },
        {
          "key" : "192.168.22.121",
          "doc_count" : 696,
          "IP_destination" : {
            "doc_count_error_upper_bound" : 0,
            "sum_other_doc_count" : 0,
            "buckets" : [ ]
          }
        },

The buckets in the IP_destination part are empty as you can see in the code below.
I want to test if this bucket is empty or not. If it is empty then don’t display the IP_source aggregation entry in the bucket of IP_source aggregation.

Is there any method to do that?