anchor.diff:  [source,js]
   --------------------------------------------------
   {
  -    category: {
  -        type:      "string",
  -        fielddata: {
  -            loading: "eager"
  +    "category": {
  +        "type":      "string",
  +        "fielddata": {
  +            "loading": "eager"
           }
       }
   }
  
positive.code: [source,js]
  --------------------------------------------------
  {
      category: {
          type:      "string",
          fielddata: {
              loading: "eager_global_ordinals"
          }
      }
  }
  
negative.code: [source,js]
  --------------------------------------------------
  {
      "tweet": {
          "type":      "string",
          "analyzer":  "whitespace"
          "fielddata": {
              "filter": {
                  "regex": {
                      "pattern": "^#.*"
                  }
              }
          }
  