anchor.diff:  === Processors
   
   ==== Set processor
  -Sets one field and associates it with the specified value. If a field already exists,
  +Sets one field and associates it with the specified value. If the field already exists,
   its value will be replaced with the provided one.
   
   [source,js]
  
positive.code: --------------------------------------------------
  
  ==== Remove processor
  Removes an existing field. If a field doesn't exist, nothing will happen.
  
  [source,js]
  --------------------------------------------------
  
negative.code: --------------------------------------------------
  
  ==== Rename processor
  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]
  