code: function restoreService(service) {
    if (services[service]) {
      restoreAllMethods(service);
      if (services[service].stub)
        services[service].stub.restore();
      delete services[service];
    } else {
      console.log('Service ' + service + ' was never instantiated yet you try to restore it.');
    }
  }
docs: Restores a single mocked service and its corresponding methods.