anchor.diff:      "aggs" : {
           "countries" : {
               "terms" : {
  -                "field" : "address.country",
  -                "order" : [ { "females>height_stats.avg" : "desc" }, { "_count" : "desc" } ]
  +                "field" : "artist.country",
  +                "order" : [ { "rock>playback_stats.avg" : "desc" }, { "_count" : "desc" } ]
               },
               "aggs" : {
  -                "females" : {
  -                    "filter" : { "term" : { "gender" : { "female" }}},
  +                "rock" : {
  +                    "filter" : { "term" : { "genre" : { "rock" }}},
                       "aggs" : {
  -                        "height_stats" : { "stats" : { "field" : "height" }}
  +                        "playback_stats" : { "stats" : { "field" : "play_count" }}
                       }
                   }
               }
  
positive.code:     "aggs" : {
          "countries" : {
              "terms" : {
                  "field" : "address.country",
                  "order" : { "females>height_stats.avg" : "desc" }
              },
              "aggs" : {
                  "females" : {
                      "filter" : { "term" : { "gender" :  "female" }},
                      "aggs" : {
                          "height_stats" : { "stats" : { "field" : "height" }}
                      }
                  }
              }
  
negative.code: --------------------------------------------------
  {
      "aggs" : {
          "genres" : {
              "terms" : { "field" : "genre" }
          }
      }
  }
  