public ActionResult PageHistory(Guid? id, Guid? versionid) {
ShowSaved("Selected items removed", "No items selected to remove");
PageHistoryModel model = new PageHistoryModel(this.SiteID);
if (id.HasValue) {
model.SetCurrent(id.Value);
}
if (versionid.HasValue) {
model.SetVersion(versionid.Value);
}
return View(model);
}