DesignPremium EpisodesS5 Premium Episode #430: Parallel Hierarchy Avdi Grimm July 28, 2016 0 Comments This page is just for members. Sign in or subscribe to gain access! Username Password * Remember Me Forgot Password Related CategoriesDesign, Premium Episodes, S5 PremiumTagscode smells, domain modeling, failure handling, Martin Fowler, oop, patterns, refactoring, Whole Value