Thread:Extension talk:MobileFrontend/Customize: Mobile Logo path

I'd like to add a logo using $wgMobileFrontendLogo

but this path (noted in the docs) doesn't exist. /MobileFrontend/stylesheets/images/mw.png

Is there a new path? Where do I drop my logo.png file?

I only have a vague understanding of how $wgExtensionAssetsPath might be used to fix this.

Thanks!