anchor.diff:        "syncPeriod" : 300
       }
     }
  -...
   }
   ----
   
  
positive.code:           "timestamps": [
              1528304160,
              1528304220,
              ...
            ],
            "values": {
              "numShards": [
                "NaN",
                2.0,
                ...
              ],
              "numReplicas": [
                "NaN",
                4.0,
                ...
              ],
              ...
            }
          },
          "RRA:AVERAGE:0.5:10:288": {
            "timestamps": [
              1528145400,
              1528146000,
            ...
        "lastModified": 1528318606,
        "node": "127.0.0.1:8983_solr"
      }
  
negative.code: // specific language governing permissions and limitations
  // under the License.
  
  Solr collects long-term history of certain key metrics both in SolrCloud and in standalone mode.
  
  This information can be used for very simple monitoring and troubleshooting, but also some
  SolrCloud components (e.g., autoscaling) can use this data for making informed decisions based on
  long-term trends of selected metrics.
  
  [IMPORTANT]
  