     func newsSceneDidTapShowMessagesAction(_ scene: NewsScene) {
         showMessagesCommand.run()
     }
+
+    // MARK: Private
 
     private func authStateResolved(_ state: AuthState) {
         switch state {

        authService.add(observer: self)
    }

    func userDidLogin(_ user: User) {
        newsScene.showMessagesNavigationAction()
        newsScene.hideLoginNavigationAction()

        newsScene.showLoginDescription(welcomePromptStringFactory.makeDescriptionForAnonymousUser())
    }

    // MARK: NewsSceneDelegate

    func newsSceneDidTapLoginAction(_ scene: NewsScene) {
        performLoginCommand.run()
    }
