anchor.diff:    }
   
     /**
  -  * @hint functions like `customArgs()`, except it sets the `custom_args` property for the **current** personalization envelope. If any personalized custom arguments are set, this method overwrites them.
  +  * @hint functions like `customArgs()`, except it sets the `custom_args` property for the **current** personalization envelope. If any personalized custom arguments were previously set, this method overwrites them.
     */
     public any function withCustomArgs( required struct args ) {
       var count = countPersonalizations();
  
positive.code:   }
  
    /**
    * @hint sets the `substitutions` property for the **current** personalization envelope. If any substitutions are set, this method overwrites them.
    * @substitutions An object containing key/value pairs of substitution tags and their replacement values.
    */
    public any function withSubstitutions( required struct substitutions ) {
  
negative.code:   }
  
    /**
    * @hint functions like `headers()`, except it sets the `headers` property for the **current** personalization envelope. If any personalized headers were previously set, this method overwrites them.
    */
    public any function withHeaders( required struct headers ) {
      var count = countPersonalizations();
  