anchor.diff:  
       var deps = Dependency.getDependencies(pubspecMap);
   
  -    var package = new VizPackage._(path, packageName, version, deps);
  +    var package = new VizPackage._(packageName, version, deps);
   
       if (flagOutdated) {
         await package.updateLatestVersion();
  
positive.code: 
    Version get latestVersion => _latestVersion;
  
    VizPackage._(String path, this.name, this.version, Set<Dependency> deps)
        : dependencies = new UnmodifiableSetView(deps),
          this.path = p.normalize(path);
  
    static Future<VizPackage> forDirectory(String path,
        {bool flagOutdated: false}) async {
  
negative.code:     if (other is VizPackage) {
        var match = (name == other.name);
        if (match) {
          assert(other.version == version);
          return true;
        }
  