public async ValueTask Delete(MangasContext context, int accountId)
        {
            var bookmark = await context.Bookmarks.FirstAsync(b => b.Id == BookmarkId && b.AccountId == accountId);

            context.Remove(bookmark);
        }
        public async ValueTask DeleteById(MangasContext context)
        {
            var bookmark = await context.Bookmarks.FirstAsync(b => b.Id == BookmarkId);

            context.Remove(bookmark);
        }