I just discovered the "has overrides" indication in the editor, hugely useful to me.
But I also discovered that it doesn't give me the full class list, so I cannot rely on it : too bad.
For example, I have a main class called "opd". A bunch of subclasses extend opd, I have among them "fiche", "video", "qcm", "parcours_media". They all override an "opd" method called "update_on_prod". But "parcours_media" is the only one that doesn't appear in "has overrides", and also the only one that has subclasses which also override the same method.
Is it the reason why it doesn't appear ?