anchor.diff:        .lens((template) => template.isRelatedTo.isRelatedTo.isRelatedTo.isRelatedTo.isRelatedTo.isRelatedTo.isRelatedTo.firstName = 'auntie Hattie');
   
     _prettyPrint(subject);
  +
  +  /*
  +    {
  +          "id": "1",
  +          "firstName": "John",
  +          "lastName": "Doe",
  +          "isRelatedTo": {
  +              "id": "2",
  +              "firstName": "Jane",
  +              "lastName": "Smith",
  +              "isRelatedTo": {
  +                  "id": null,
  +                  "firstName": null,
  +                  "lastName": null,
  +                  "isRelatedTo": {
  +                      "id": null,
  +                      "firstName": null,
  +                      "lastName": null,
  +                      "isRelatedTo": {
  +                          "id": null,
  +                          "firstName": null,
  +                          "lastName": null,
  +                          "isRelatedTo": {
  +                              "id": null,
  +                              "firstName": null,
  +                              "lastName": null,
  +                              "isRelatedTo": {
  +                                  "id": null,
  +                                  "firstName": null,
  +                                  "lastName": null,
  +                                  "isRelatedTo": {
  +                                      "id": null,
  +                                      "firstName": "auntie Hattie",
  +                                      "lastName": null,
  +                                      "isRelatedTo": null
  +                                  }
  +                              }
  +                          }
  +                      }
  +                  }
  +              }
  +          }
  +      }
  +   */
   }
   
   /*
  
positive.code:   final Person subject = new PersonImpl(JSON.decode(dataRaw));
  
    _prettyPrint(subject);
  }
  
  /*
  
negative.code:       .lens((template) => template.isRelatedTo.isRelatedTo.lastName = 'Pete');
  
    _prettyPrint(subject);
  
    /*
        {
            "id": "1",
            "firstName": "Billie",
            "lastName": "The Kid",
            "isRelatedTo": {
                "id": "2",
                "firstName": "Calamity",
                "lastName": "Jane",
                "isRelatedTo": {
                    "id": null,
                    "firstName": "Pistol",
                    "lastName": "Pete",
                    "isRelatedTo": null
                }
            }
        }
     */
  }
  
  /*
  