public override async Task<bool> UpdateAsync(NotificationSettingModel model)
        {
            //// 1 2
            ///  1 2 null
            /// [] []
            /// [] [] []
            var entity = await _repository.GetAsync((long)model.Id);
            if (entity == null)
            {
                throw new ArgumentNullException(nameof(entity));
            }

            entity.NotificationEnabled = model.NotificationEnabled;
            entity.EmailNotificationEnabled = model.EmailNotificationEnabled;
            entity.PushNotificationEnabled = model.PushNotificationEnabled;

            entity.SubscriptionItems = model.SelectedSettingsItems.Where(b => b.Id != 0)
                .Select(_ => new NotificationSettingsItem
            {
                Id = (long)_.Id,
                NotificationSetting = entity,
                ProjectId = _.TargetType == NotificationSettingType.Project ? _.ProjectId : default(long?),
                PersonId = _.TargetType == NotificationSettingType.Person ? _.UserId : string.Empty
            }).ToList();

            entity.BranchSubscriptions = model.SelectedBranches.Where(b => b.Id != 0)
                .Select(_ => new NotificationBranchSubscription { Id = (long)_.Id, ProjectId = _.ProjectId, Name = _.Name })
                .ToList();

            //Deleted -> Pass to the Update and delete from DB manually
            var deletedId = entity.SubscriptionItems
                .Where(c => !model.SelectedSettingsItems.Select(ssi => ssi.Id).Contains(c.Id));
            // Added (List of  notificationSettingItems )-> Pass to the Update method in repo and save them to the db, add them to the entity and save the changes
            var addedEntities = entity.SubscriptionItems
                .Where(c => !model.SelectedSettingsItems.Select(ssi => ssi.Id).Contains(c.Id));

            _repository.Update(entity,deltedIds, addedEntities);

            return true;
        }