A Swift protocol allowing to 1) shorten the code required to instantiate an UIViewController from a storyboard 2) store the storyboard id in the predictable place

StoryboardInstantiatableViewController.swift

import UIKit

/**
  This protocol along with the extension provides some syntactic sugar and solves two common problems:
  - Shortens the instantiation
  - Answers, where to store the storyboard id
  Blog post: https://kelindev.blogspot.com/2018/10/uikit-protocol-of-month.html
  */
protocol StoryboardInstantiatableViewController {
  static var storyboardId: String { get }
}

extension StoryboardInstantiatableViewController where Self: UIViewController {
  static func instantiate(from storyboard: UIStoryboard?) -> Self? {
    return storyboard?.instantiateViewController(withIdentifier: Self.storyboardId) as? Self
  }
}