As it happens? The new "Canon" Darth Vader comic by Kieron Gillen answered that:https://scans-daily.dreamwidth.org/5365434.html#cutid1(FWIW: I think it's quite good. Picking up the trade is recommended.)
https://scans-daily.dreamwidth.org/5365434.html#cutid1
(FWIW: I think it's quite good. Picking up the trade is recommended.)