Missing coefficients in LiftDrag Plugin

[fredmarkus]

I was going through the code for the liftdrag plugin and noticed that the cm coefficient was set to 0. Above it is a comment marking it as todo, saying "it needs testing". I was wondering what was not working well that it had to be set to 0? The issue is that the effect of the coefficient is neglected for the remainder of the function, meaning the plugin does not work as accurate as it should.

The lines in question:
https://github.com/gazebosim/gz-sim/blob/f6efeefb4ab99284d1a053061235f8c2fa02a5da/src/systems/lift_drag/LiftDrag.cc#L438C3-L440C12