anchor.diff:  }
   
   Future<Map<String, LibraryElement>> getLibraries() async {
  +  var pkgLibPath = p.join(_packageRootPath, 'lib');
  +
     var result = Process.runSync('find', [pkgLibPath, '-iname', '*.dart']);
   
     var items = LineSplitter.split(result.stdout).toSet();
  
positive.code:     return segments.length > 1 && segments.first == 'src';
    });
  
    var context = await getAnalysisContextForProjectPath(packageRootPath, items);
  
    var uriSources = new SplayTreeMap<Uri, Source>(_uriComparer);
    var libElements = new SplayTreeMap<String, LibraryElement>();
  
negative.code:   }
    return null;
  }
  