How to disable the Super Key? (18.04+)

Question

I want to disable the Super key, when I press Super nothing should happen.

I want to retain other shortcuts such as Super+Left though.

How can I do that?

(Same question from 2012, none of the solutions work in 18.04, accepted answer included)
(Same question from 2012, but the accepted answer does not work)

Answer 1

I used on ubuntu 18.04

gsettings set org.gnome.mutter overlay-key 'Alt_R'

to deactivate super, and it retain shortcuts too.