anchor.diff:  }
   
   
  -/// Handles requests for /packages/<package>/versions/<version>
  +/// Handles requests for /packages/<package>/versions
   packageVersionsHandler(shelf.Request request, String packageName) async {
     var db = dbService;
     var packageKey = db.emptyKey.append(Package, id: packageName);
  
positive.code:       templateService.renderPkgVersionsPage(package, versions));
  }
  
  
  /// Handles request for /api/packages?page=<num>
  apiPackagesHandler(shelf.Request request) async {
  
negative.code:       headers: {'content-type' : 'application/json; charset="utf-8"'});
  }
  
  shelf.Response _yamlResponse(String yamlString, {int status: 200}) {
    return new shelf.Response(
        status,
        body: yamlString,
        headers: {'content-type' : 'text/yaml; charset="utf-8"'});
  }
  
  shelf.Response _atomXmlResponse(String content, {int status: 200}) {
    return new shelf.Response(
        status,
  