anchor.diff:  
   The list of virtual attributes is the following:
   
  -* `dateCreated` (type: `date`): entity creation date as ISO 8601 string.
  -* `dateModified` (type: `date`): entity modification date as ISO 8601 string.
  +* `dateCreated` (type: `DateTime`): entity creation date as ISO 8601 string.
  +* `dateModified` (type: `DateTime`): entity modification date as ISO 8601 string.
   
   As regular attributes, they can be  used in `attrs`, `q` filters and `orderBy`. However, they cannot be used
   in resource URLs.
  
positive.code: {
    "timestamp": {
      "value": "2017-06-17T07:21:24.238Z",
      "type: "date"
    }
  }
  ```
  
negative.code:                 "accuracy": 2,
                  "timestamp": {
                      "value": "2015-06-04T07:20:27.378Z",
                      "type": "DateTime"
                  }
              }
           }
  