Material OnlyShadow for YafRay?

Just curious how this can be done with YafRay.

Material only recieving Shadows that is.

?

Can it even be done? I am finding a big No via Google… though i cannot confirm when the “No” was made. Is that old news? Can it do OnlyShadow now?

This will suck if it cant… the render speed is amazing.

After searching, I also think it can’t.