ComboBox with sub menus in the JUCE code

And here I am, the poor guy who relies on that virtual function for some obscure aspect. I am now forced to switch to the develop branch to bring in some changes that are not easily cherry-pickable to master (see this), and as a result I have to rework on this completely different area because of this breaking change.

It’s frustrating.

@fabian, I’m sorry to require your attention again, but I see it’s you who committed this (00c0671c6b2c938776bafbb3959d1ed5493d8578).
Why was the old function removed altogether, instead of just deprecating it?
How am I supposed to achieve the same functionality now?