Removing instances from default Foliage actor (C++)

Hello Unreal community!
I’ve spent a few hours today looking for ways to remove a tree instance from the default Foliage actor (the one edited in Unreal Editor).
Suffice to say, I wasn’t successful, at least not till the end. I managed to get the foliage and reach inside the Remove Instance method but without success. I’ve been running it in the Editor and some of the functions are only available (compiled) with the editor version. At the same time, there seems to be no instance for the foliage mesh I was looking at, regardless of the other limitations.
I was wondering if this feature is WIP or something that hasn’t been tackled yet or it is finalized and I haven’t been able to produce a result in the time I had? (I coded C++ only).