AttributeError: 'Plone' object has no attribute 'getIcon'
@fgrcon I found no documentation on this change on your PLIP:
I know implementation of that PLIP has very hard, but we have to add always deprecation warnings in previous Plone versions to make life easier for everyone.
As far as I know, collective.cover never worked with 5.x anyway. Geticon was unused in 5.x anyway. Content type icons are fontello fonts now. The metadata attribute geticon (now boolean) is true whenever the item is an image or has an image property (e.g lead image). I think there were some deprecation warnings from 5.02. - but the whole icon story was a huge mess: fontello fonts and icons or nothing etc.
Right now I am working on up-to-date documentation (on branch: plip1734thumbs ) and fixing the last 1 failing test. The PLIP is not in core yet so It should not be causing any problems yet.
thanks you; I think the documentation on Plone 4 is incomplete, I'll try to review it later.
IMO, the explanation on the Plone 5 situation makes evident a lot of design mistakes that we will need to address also in the future... in fact I think there's already some work on that.