A protocol to be used to avoid hardcoding of reuse identifier (reference link: https://medium.com/swift-programming/uistoryboard-safer-with-enums-protocol-extensions-and-generics-7aad3883b44d)

StoryboardIdentifiable.swift

protocol StoryboardIdentifiable {
    static var storyboardIdentifier: String { get }
}

extension StoryboardIdentifiable where Self: UIViewController {
    static var storyboardIdentifier: String {
        return String(describing: self)
    }
}

// Uncomment for Global Confirmance   
// extension UIViewController: StoryboardIdentifiable { }