At level 10 the Underground Chemist gains "Discovery su" similar to a level 2 Alchemist. I am wondering if a level 10 Underground Chemist would qualify for the Extra Discovery feat?
Extra Discovery feat's requirement is "Discovery class feature", now both a level 2 Alchemist and level 10 Underground Chemist gain "Discovery su" however I am unsure if what the Underground Chemist gains is a class feature or more of an archetype feature?