anchor.diff:  
       double seconds = stopwatch.elapsedMilliseconds / 1000.0;
       print('');
  -    var length = libraryElementList.isNotEmpty ? libraryElementList.length : libraryList.length;
  +    var length = libraryElementList.isNotEmpty
  +        ? libraryElementList.length
  +        : libraryList.length;
       print(
           "Documented ${length} librar${length == 1 ? 'y' : 'ies'} in ${seconds.toStringAsFixed(1)} seconds.");
     }
  
positive.code:       });
      }
      double seconds = stopwatch.elapsedMilliseconds / 1000.0;
      var length = libraryElementList.isNotEmpty ? libraryElementList.length : libraryList.length;
      print(
          "\nParsed ${length} " "librar${length == 1 ? 'y' : 'ies'} in " "${seconds.toStringAsFixed(1)} seconds.\n");
    }
  
negative.code:       libraryElementList
          ..removeWhere(
              (LibraryElement library) => _excludes.contains(library.name));
        package = new Package.fromLibraryElement(
            libraryElementList, _rootDir.path,
            sdkVersion: _getSdkVersion(),
            isSdk: sdkDocs,
            readmeLoc: sdkReadmePath);
  