anchor.diff:  --------------------------------------------------
   
   ==== Rename processor
  -Renames an existing fields. If a field doesn't exist, an exception will be thrown. Also, the new field
  +Renames an existing field. If the field doesn't exist, an exception will be thrown. Also, the new field
   name must not exist.
   
   [source,js]
  
positive.code: --------------------------------------------------
  
  ==== Remove processor
  Removes an existing field. If a field doesn't exist, nothing will happen.
  
  [source,js]
  --------------------------------------------------
  
negative.code: 
  The supported types include: `integer`, `float`, `string`, and `boolean`.
  
  `boolean` will set the field to true if its string value is equal to `true` (ignore case), to
  false if its string value is equal to `false` (ignore case) and it will throw exception otherwise.
  
  [source,js]
  