The CookRule in the manager's FPrimaryAssetRules. CookRules that add references (AlwaysCook, DevelopmentAlwaysCook) apply an inclusion for their production level (Production or Development) and all lower levels. (e.g. AlwaysCooked applies an inclusion for both Production and Development). CookRules that add exclusions (NeverCook, ProductionNeverCook, DevelopmentAlwaysProductionNeverCook) apply an exclusion for their production level and all higher levels (e.g. NeverCooked applies an exclusion for both Production and Development.) Inclusions for each level are unioned, and exclusions for each level are unioned.