Thumbnails in Warclight

One feature of Blacklight that I’ve always wanted to setup in Warclight is displaying thumbnails in the results display. Getting this setup is a bit tricky. But, since Warclight is standardizing metadata on webarchive-discovery’s Solr schema.xml, we avail ourselves to a number of fields available for use for a potential implementation. The url field is the obvious choice, but the problem is that Blacklight out of the box will try and display a thumbnail for every url field value you give to config.