How to use #selector(myMethodName) in a protocol extension?

protocol LazyUpdateable {
    func waitToDoStuff()
    func myMethodName()
}


extension LazyUpdateable where Self: NSObject {
    func waitToDoStuff() {
        self.performSelector(#selector(myMethodName), withObject: nil, afterDelay: 1.5)
    }

    func myMethodName() {

    }
}

With this update i get the error Argument of #selector refers to a method that is not exposed to objective c, but if i go with the old Selector("myMethodName") i get a warning to change to the better way of doing it. Is it possible to use the #selector() in this case? It won't work with setting @objc on my protocol, i've tried it.

Here is a playground you can try that shows it does not work with setting @objc

import Foundation
import UIKit
import XCPlayground


@objc protocol LazyUpdatable {
    optional func waitToDoStuff()
    optional func myMethodName()
}

extension LazyUpdatable where Self: UIViewController {
    func waitToDoStuff() {
        self.performSelector(#selector(myMethodName), withObject: nil, afterDelay: 1.5)
    }

    func myMethodName() {
        print("LOL")
    }
}


@objc
class AViewController: UIViewController, LazyUpdatable {
    func start() {
        waitToDoStuff()
    }
}

let aViewController = AViewController()
aViewController.start()

XCPlaygroundPage.currentPage.needsIndefiniteExecution = true