@epuertat can you explain a bit more about the UI endpoints - specifically how to use `UIAPIRouter`? I'm a little confused about what change to make - would it involve using @UIRouter?: https://github.com/ceph/ceph/blob/6fee777d603aebce492c57b41f3b5760d50ddb07/src/pybind/mgr/dashboard/controllers/_ui_router.py#L4