anchor.diff:                  },
                   "sales_deriv": {
                       "derivative": {
  -                        "buckets_paths": "sales" <1>
  +                        "buckets_path": "sales" <1>
                       }
                   }
               }
  
positive.code: }
  --------------------------------------------------
  
  <1> `bucket_paths` instructs this derivative aggregation to use the output of the `sales` aggregation for the derivative
  
  And the following may be the response:
  
  
negative.code:                 },
                  "sales_deriv": {
                      "derivative": {
                          "buckets_path": "sales"
                      }
                  },
                  "sales_2nd_deriv": {
                      "derivative": {
                          "buckets_path": "sales_deriv" <1>
                      }
                  }
              }
  