public async Task <ActionResult <IEnumerable <PermissionViewModel> > > AddFunctionInPermission()
 {
     try
     {
         await Task.Run(() =>
         {
             _permissionService.AddRangPermission();
             _permissionService.SaveChanges();
             return(Ok("Thêm thành công!"));
         });
     }
     catch
     {
         throw new Exception(string.Format("Lỗi khi thêm dữ liệu"));
     }
     return(Ok());
 }