Get node values

I'm working on a mod right now and I would like to know if it is possible in any way to get if a given node is in water or not (called "density" in the node debug view). It seems to me that those node values are not exposed anywhere, but I'd like to be proven otherwise. And maybe there is a workaround somehow?

 

There's a function in the BeamObject "obj" global for this:

Code:

obj:inWater(cid)

 

ok thank you very much!