/// <summary>Called when a process requests authorization.</summary>
 /// <param name="filterContext">The filter context, which encapsulates information for using <see cref="T:System.Web.Mvc.AuthorizeAttribute" />.</param>
 /// <exception cref="T:System.ArgumentNullException">The <paramref name="filterContext" /> parameter is null.</exception>
 public override void OnAuthorization(AuthorizationContext filterContext)
 {
     filterContext.SetControllerContext();
     base.OnAuthorization(filterContext);
 }