anchor.diff:      tempdirsCache.memoized1(createTempSync, 'dartdoc');
   Directory get sdkDocsDir => tempdirsCache.memoized1(createTempSync, 'sdkdocs');
   Directory get flutterDir => tempdirsCache.memoized1(createTempSync, 'flutter');
  +Directory get testPackage =>
  +    new Directory(path.joinAll(['testing', 'test_package']));
  +Directory get testPackageDocsDir =>
  +    tempdirsCache.memoized1(createTempSync, 'test_package');
   
   /// Version of dartdoc we should use when making comparisons.
   String get dartdocOriginalBranch {
  
positive.code:         '--show-progress',
        ],
        workingDirectory: cwd);
  }
  
  @Task('Serve generated SDK docs locally with dhttpd on port 8000')
  
negative.code:       Platform.resolvedExecutable,
        [
          '--checked',
          path.join('bin', 'dartdoc.dart'),
          '--output',
          '${sdkDocsDir.path}',
          '--sdk-docs',
  