private lazy var proxy: RxTableViewSectionedReloadProxy<TodoSectionModel> = {
    RxTableViewSectionedReloadProxy<TodoSectionModel>(configureCell: { (_, tableView, indexPath, item) -> UITableViewCell in
        let cell = tableView.dequeueReusableCell(withIdentifier: "cellID", for: indexPath) as! TodoItemCell
        cell.bindViewModel(item)
        return cell
    }, canEditRowAtIndexPath: { _, _ in
        return true
    }, canMoveRowAtIndexPath: { _, _ in
        return true
    }, heightForRowAtIndexPath: { _, _, item in
        return 60
    }, heightForHeaderInSection: { _, _ -> CGFloat in
        return 50
    }, viewForHeaderInSection: { _, _, _  -> UIView? in
        return UILabel().chain.text("云推荐").textAlignment(.center).build
    })
}()

// Bind to proxy not dataSource
items.drive(tableView.rx.items(proxy: proxy)).disposed(by: disposeBag)