https://forums.flightsimulator.com/t/what-did-you-do-in-msfs-today-part-2/553275/4349?u=tuffbull7923
Yeah right, I wanted to answer your post here 
I checked in my version of the Albatros and you are right, it IS called emergency fuel shutoff. And to think I have 100+ flights with this plane…
I checked the throttle too and I think it should work as you described, but it does not. The throttle has that STOP position, there is a small pin that should stop you accidentally pulling the throttle there, however as I move the throttle backwards the pin lifts a bit, goes over the guarding edge and is clearly indicating that the throttle handle is in the stop position, yet the engine simply idles. My guess is that MSFS intends us to use the emergency fuel shutoff handle.