{
   "docs": [
      {
         "_id": "1",
         "field_statistics": false,
         "term_statistics": true,
         "payloads": false,
         "offsets": false,
         "positions": false,
         "fields":["a","b","c"],
         "_index": "testidx"
      },
      {
         "_id": "2",
         "field_statistics": false,
         "term_statistics": true,
         "payloads": false,
         "offsets": false,
         "positions": false,
         "fields":["a","b","c"],
         "_index": "testidx"
      }
   ]
}