anchor.diff:  ----
   {"id":"mydoc",
    "price":99,
  - "popularity":62,
  + "popularity":35,
    "categories":["kids","toys","games"],
    "sub_categories":["under_5","under_10"],
    "tags":["buy_now","clearance"]
  
positive.code: * copy targets of updated fields, if any, are also non-indexed, non-stored single valued numeric docValues fields.
  
  To use in-place updates, add a modifier to the field that needs to be updated.
  The content can be updated or incrementally increased.
  
  `set`::
  Set or replace the field value(s) with the specified value(s).
  May be specified as a single value.
  
  `inc`::
  Increments a numeric value by a specific amount.
  Must be specified as a single numeric value.
  
  [TIP]
  ====
  
negative.code: This allows updating only specific fields, which can help speed indexing processes in an environment where speed of index additions is critical to the application.
  
  To use atomic updates, add a modifier to the field that needs to be updated.
  The content can be updated, added to, or, if the field has a numeric type, incrementally increased or decreased.
  
  `set`::
  Set or replace the field value(s) with the specified value(s), or remove the values if 'null' or empty list is specified as the new value.
  