import UIKit
import RxSmartBag

extension UIViewController: SmartBagManagerable {}

import RxSmartBag

class ViewController: UIViewController {
  override func viewDidLoad() {
    super.viewDidLoad()

    // `smartBag` is able to use without declararing, and can bind simply by operator.
    
    // Example 1:
    observable.subscribe(...).disposed(by: smartBag)
    
    // Example 2:
    observable.subscribe(...).disposed(by: self)
    
    // Example 3:
    smartBag += observable.subscribe(...)

}