I am currently upgrading my plugins, as of 7.3.0 of the API the spaceManager is depracted, and the SpaceService class should be used.
It works well when I need to get a space by space key .find().withKeys(…).fetch()
But I can’t find a way to fetch a space by its spaceId. In the javadocs, also this find function is referenced, but i have now idea how to use it.