How to use the SListPanel Slate widget ?

I’m trying to recreate a UI similar to the ones that are in the Unreal editor (like detail panel) using Slate.
When i use the widget reflector i see that the SListPanel widget is used a lot to create lists of parameters but i can’t figure out how to use it.
The problem is that it is defined in a private folder so i doesn’t seems to be included in the Slate, SlateCore or InputCore modules. If i include the SListPanel.h I get a link error saying that it cannot resolve the external link so i’m pretty sure i should include a certain module but the SListPanel widget is not in the documentation…
If anyone have a solution it would be very nice, i don’t understand why this widget seems to be used almost everywhere in the editor but there is no infos on the internet, even in the documentation…