anchor.diff:  
   [source,js]
   -----------------------------------
  -curl -XPOST localhost:9200/_scripts/mvel/indexedCalculateScore -d '{
  +curl -XPOST localhost:9200/_scripts/groovy/indexedCalculateScore -d '{
        "script": "log(_score * 2) + my_modifier"
   }'
   -----------------------------------
  
positive.code:         {
            "script_score": {
              "script_id": "indexedCalculateScore",
              "params": {
                "my_modifier": 8
              }
  
negative.code: Indexed scripts can be deleted by:
  [source,js]
  -----------------------------------
  curl -XDELETE localhost:9200/_scripts/mvel/indexedCalculateScore
  -----------------------------------
  
  [float]
  