I don't see it as a 'conversion' per se, but I've been doing something similar to property checking for years in various tests, and therefore I don't think this

I don't see it as a 'conversion' per se, but I've been doing something similar to property checking for years in various tests, and therefore I don't think this is necessarily a new 'discovery' but more of a refinement of a codification of an existing, long-standing (decades) practice.