badOut := &example.Pod{}
			err = store.GuaranteedUpdate(ctx, badKey, badOut, true, nil, storage.SimpleUpdate(
				func(runtime.Object) (runtime.Object, error) {
					obj := basePod.DeepCopy()
					obj.Namespace = fmt.Sprintf("%s-bad", tt.namespace)
					return obj, nil
				}), nil)
			if err != nil {
				t.Fatalf("GuaranteedUpdate of bad pod failed: %v", err)
			}

			var prevObj *example.Pod

		return input, nil, nil
	}
	// GuaranteedUpdate without suggestion should return an error
	if err := store.GuaranteedUpdate(ctx, preset[1].key, &example.Pod{}, false, nil, updateFunc, nil); !storage.IsInternalError(err) {
		t.Errorf("Unexpected error: %v", err)
	}
	// GuaranteedUpdate with suggestion should return an error if we don't change the object

			return err
		}
	}
	metrics.RecordListCacheMetrics(c.resourcePrefix, indexUsed, len(objs), listVal.Len())
	return nil
}

// GuaranteedUpdate implements storage.Interface.
func (c *Cacher) GuaranteedUpdate(
	ctx context.Context, key string, destination runtime.Object, ignoreNotFound bool,
	preconditions *storage.Preconditions, tryUpdate storage.UpdateFunc, _ runtime.Object) error {

		storagePreconditions.ResourceVersion = preconditions.ResourceVersion
	}

	out := e.NewFunc()
	// deleteObj is only used in case a deletion is carried out
	var deleteObj runtime.Object
	err = e.Storage.GuaranteedUpdate(ctx, key, out, true, storagePreconditions, func(existing runtime.Object, res storage.ResponseMeta) (runtime.Object, *uint64, error) {
		existingResourceVersion, err := e.Storage.Versioner().ObjectResourceVersion(existing)

	}
	d.RLock()
	defer d.RUnlock()
	podList := listObj.(*example.PodList)
	podList.ListMeta = metav1.ListMeta{ResourceVersion: "100"}
	return d.err
}
func (d *dummyStorage) GuaranteedUpdate(_ context.Context, _ string, _ runtime.Object, _ bool, _ *storage.Preconditions, _ storage.UpdateFunc, _ runtime.Object) error {
	return fmt.Errorf("unimplemented")
}
func (d *dummyStorage) Count(_ string) (int64, error) {