Get access to F(Streaming)LevelCollectionModel?

Can anyone help me get access to FLevelCollectionModel or FStreamingLevelCollectionModel?

I’ve got everything from WorldBuilder (which is pretty much the only place in the source file that uses these classes)'s build file in my own, and I can #include “Editor/WorldBrowser/Private/StreamingLevels/StreamingLevelModel.h” (I’ve already tried dumping all the WorldBrowserPrivatePCH includes in my file as well, but no dice).

VS recognises the class, but as soon as I try to build, I get a bunch of random errors in the engine source files referring to drag & drop UI stuff (which should be part of the UnrealEd module anyway and thus known, as far as I can see), but…

Same thing if I try with FLevelCollectionModel.

Any ideas?
(I need to find a streaming level and translate/rotate it in code, and I’m trying to replicate the StreamingLevelCustomization UI code that’s the only place that does this)

Did you ever have any luck with this? I am trying to access the same class (in order to change level properties on a hundreds of streaming levels)