public ActionResult DeleteConfirmed(Guid systemid)
        {
            Models.Symbol symbol = _symbolService.GetSymbol(systemid);

            bool hasAccess = _authorizationService.HasAccess(symbol.Owner,
                                                             ClaimsPrincipal.Current.GetOrganizationName());

            if (!hasAccess)
            {
                return(new HttpStatusCodeResult(HttpStatusCode.Unauthorized));
            }

            _symbolService.RemoveSymbol(symbol);
            return(RedirectToAction("Index"));
        }