public IActionResult AddPermissionGroup(string permissionGroupName)
 {
     try
     {
         var permissionGroup = new PermissionGroup()
         {
             GroupName = permissionGroupName
         };
         var res = _permissionManager.AddOrUpdatePermissionGroup(permissionGroup);
         _uow.Save();
         var permissionGroupVm = Mapper.Map <PermissionGroupVm>(res);
         return(Ok(permissionGroupVm));
     }
     catch (Exception ex)
     {
         return(StatusCode(500, ex.Message));
     }
 }