is the only command you need, it will/should take care of all the rest … (if not, please file a bug on launchpad)
if you manually tinker with bits and pieces of the underlying system and pull out the carpet underneath instead, you likely cause confusion for the implemented bits and will have to keep the broken pieces …
this “doc” page looks like a clickbait page that makes money with plastering as many ads around the wrong instructions as possible …