Great catch—UX (User Experience) elements like menus, HUDs, notifications, and user controls aren’t shown in those GTA 6 diagrams.
A full UML would usually include classes for UI components (MenuSystem, HUD, DialogBox, InputHandler) to model how users interact with the game and get feedback, connecting those back to both game logic and rendering systems for a seamless player experience.
If you want specifics on possible class names or methods for UX, just ask!