protected virtual void InnerHandle(UserChangedEvent @event)
 {
     foreach (var change in @event.ChangedEntries ?? Array.Empty <GenericChangedEntry <ApplicationUser> >())
     {
         CustomerCacheRegion.ExpireMemberById(change.NewEntry.MemberId);
     }
 }
        protected virtual void ClearCache(IEnumerable <Member> members)
        {
            CustomerSearchCacheRegion.ExpireRegion();

            foreach (var member in members.Where(x => !x.IsTransient()))
            {
                CustomerCacheRegion.ExpireMemberById(member.Id);
            }
        }