anchor.diff:  
   [source,console]
   --------------------------------------------------
  -PUT /index
  +PUT /products
   {
       "mappings": {
           "properties" : {
               "resellers" : { <1>
                   "type" : "nested",
                   "properties" : {
  -                    "name" : { "type" : "text" },
  +                    "reseller" : { "type" : "text" },
                       "price" : { "type" : "double" }
                   }
               }
  
positive.code:   ...
    "aggregations": {
      "resellers": {
        "doc_count": 0,
        "min_price": {
          "value": 350
        }
  
negative.code:     }
  }
  --------------------------------------------------
  // TEST[s/GET \/products\/_search/GET \/products\/_search\?filter_path=aggregations/]
  // TEST[continued]
  
  As you can see above, the nested aggregation requires the `path` of the nested documents within the top level documents.
  Then one can define any type of aggregation over these nested documents.
  