anchor.diff:      file.path = input['path'];
       file.content = input['content'];
       file.sha = input['sha'];
  -    file.url = input['url'];
       file.gitUrl = input['git_url'];
  -    file.htmlUrl = input['html_url'];
  +    file.url = input['html_url'];
       file.links = FileLinks.fromJSON(input['_links']);
       return file;
     }
  
positive.code:   @ApiName("sha")
    String sha;
  
    @ApiName("url")
    String url;
  
    @ApiName("git_url")
    String gitUrl;
  
    @ApiName("html_url")
    String htmlUrl;
  
    @ApiName("_links")
    FileLinks links;
  
negative.code:     fileLinks.html = input['html'];
      return fileLinks;
    }
  }