I have followed the Mega menu blogpost to the tee found here
I have also looked at all the previous topic 'answers' and none of them seem to work as of now. I for the life of me can not figure out how to get the sub-menu items, columns etc into my nav component using the suggested Graphquery format. Does anyone have a working example of this in the current versions of Prismic and NextJS that I can take a look at?