UIViewControllerExtension.swift

public extension UIViewController {
    
    class var storyboardID: String {
        return "\(self)"
    }
    
    public func instantiateViewController<T: UIViewController>(viewControllerClass: T.Type, inStoryboard: String, ofModule: Bundle?) -> T {
        let storyboard = UIStoryboard(name: inStoryboard, bundle: ofModule)
        return storyboard.instantiateViewController(withIdentifier: viewControllerClass.storyboardID) as! T
    }
}