Routing-UpdatedProfileRoute.swift

protocol ProfileRoute {
    var profileTransition: Transition { get }
    func openProfile(for user: User)
}

extension ProfileRoute where Self: RouterProtocol {

    var profileTransition: Transition {
        return ModalTransition()
    }

    func openProfile(for user: User) {
        let router = ProfileRouter()
        let profileViewController = ProfileViewController(router: router)
        router.viewController = profileViewController

        let transition = profileTransition // it's a calculated property so I saved it to the variable in order to have one instance
        router.openTransition = transition
        open(profileViewController, transition: transition)
    }
}