ViewController with library call import

ViewController.swift

import UIKit
import Networking // 1

class ViewController: UIViewController {
    let authService = AuthenticationService() // 2
    override func viewDidLoad() {
        super.viewDidLoad()
        let token = authService.login("user", "S7eo#0-2K&b") // 3
        print("token: \(token)") // 4
    }
}