anchor.diff:    return new List<int>.unmodifiable(value);
   }
   
  +class Config {
  +  final String language;
  +  final Map<String, dynamic> raw;
  +
  +  Config(this.language, this.raw);
  +
  +  factory Config.fromJson(Map<String, dynamic> json) =>
  +      new Config(json['language'], json);
  +}
  +
   class Job {
     final int id;
     final int repositoryId;
  
positive.code:   final int commitId;
    final int logId;
    final String number;
    final Map config;
    final String state;
    final String startedAt;
    final String finishedAt;
  
negative.code: 
    factory Job.fromJson(Map<String, dynamic> json) => new Job(json["id"],
        json["repository_id"], json["repository_slug"], json["build_id"],
        json["commit_id"], json["log_id"], json["number"],
        new Config.fromJson(json["config"]), json["state"], json["started_at"],
        json["finished_at"], json["queue"], json["allow_failure"], json["tags"],
        json["annotation_ids"]);
  }
  
  class JobInfo {
  