VC.swift

import UIKit
import RxDataSources
import RxSwift

class ViewController: UIViewController {

    @IBOutlet weak var tableView: UITableView!
    let dataSource = createDataSource()
    let disposeBag = DisposeBag()

    var viewModel: BooksViewModel!

    override func viewDidLoad() {
        super.viewDidLoad()
        self.viewModel = BooksViewModel()

        viewModel.items.map { books in
           [SectionOfBooks(
             header: "My books",
             items: books
            )]
           }
          .bind(to: tableView.rx.items(dataSource: dataSource))
          .disposed(by: disposeBag)
    }

}