Why would you need this? Doesn't OnActivate>Self>Door>Close do the same thing?
OnActivate>Self>Door>Close will close a door to its corresponding state OpenCW -> ClosedCW or OpenCCW -> ClosedCCW.
This add-on lets you directly go from OpenCW -> ClosedCCW or even ClosedCW -> ClosedCCW. There aren't many doors that really take advantage of all these states, only the glassiest door and TheArmyGuy's L4D door come to mind.