Push animation using custom segue

Pop.swift

protocol Pop {
    func moveBackToParentViewController(currentViewController: UIViewController)
}

extension Pop {
    func moveBackToParentViewController(currentViewController: UIViewController) {
        
        let transition = CATransition()
        transition.duration = 0.5
        transition.type = kCATransitionMoveIn
        transition.subtype = kCATransitionFromLeft
        
        currentViewController.view.window!.layer.add(transition, forKey: kCATransition)
        
        currentViewController.dismiss(animated: true, completion: nil)
    }
}

Push.swift

import UIKit

class Push: UIStoryboardSegue {
    override func perform() {
        let transition = CATransition()
        transition.duration = 0.5
        transition.type = kCATransitionPush
        transition.subtype = kCATransitionFromRight
        
        source.view.window!.layer.add(transition, forKey: kCATransition)
        source.present(destination, animated: false, completion: nil)
    }
}

PushedViewController.swift

class PushedViewController: UIViewController, Pop {
    @IBAction func backAction(_ sender: AnyObject) {
        moveBackToParentViewController(currentViewController: self)
    }
}