I'm very new to React and admin-on-rest so I don't have such a solid baseknowledge yet, please be forgiving if it's a simple question.
How can I set my menu to look like a nested list? Currently I have a custom menu and inside this menu.js I set a MenuItem with menuItems inside it to make it nested, just like in the material-ui docs.
But it doesn't looks how I want, I would like to make a nested list and pass it as my menu, but I couldn't figure out how to do that with admin-on-rest docs.