Is it possible to midi map the metronome?

Hi,

I was hoping to midi map the metronome and the metronome volume control to buttons on my controller (DDJ-1000) but I've been through all the options of functions to midi map and I can't find them. The metronome and metronome volume are possible assign keys to so I know that's an option (and have done already), but it would be great to have buttons on my controller to turn the metronome on and off, and change the volume.

Is this possible right now and I'm just not looking hard enough? If not, could it potentially be something that's added in future?

Cheers