Uikit nav walker for Wordpress

Hi! I'm searching some instructions to include a nav walker for Wordpress. I found two uikit-nav-walker but the inclusion it's not explained.

I think this is the most complete: https://gist.github.com/Dreamelf/d63b2a6a05236e66f31ee46e7f4d4482

Do you have some info about it?
Thanks 