anchor.diff:  
   import 'models.dart';
   import 'search_service.dart' show CseTokens, SearchQuery, SearchResultPage;
  +
  +final Logger _logger = new Logger('pub.cloud_repository');
   
   String _escapeAngleBrackets(String msg) =>
       const HtmlEscape(HtmlEscapeMode.ELEMENT).convert(msg);
  
positive.code: import 'dart:math';
  
  import 'package:gcloud/service_scope.dart' as ss;
  import 'package:mustache/mustache.dart' as mustache;
  
  import '../shared/analyzer_client.dart';
  
negative.code:   String renderSearchPage(SearchResultPage resultPage, PageLinks pageLinks) {
      final List results = [];
      for (int i = 0; i < resultPage.stableVersions.length; i++) {
        PackageVersion stable = resultPage.stableVersions[i];
        final PackageVersion dev = resultPage.devVersions.length > i
            ? resultPage.devVersions[i]
            : stable;
  
        if (stable == null) {
          stable = dev;
          _logger.warning("Stable version `null` for ${dev.package}.");
        }
  
        results.add({
          'url': '/packages/${stable.packageKey.id}',
          'name': stable.packageKey.id,
  