Returns a list of archetypes that are in a given set in the domain.
domain – the domain id from which the set belongs
set_id – the set id from which to retrieve archetype ids
sets (optional) – list of set ids that the given archetype_id is a member of
Response variables (dictionary)
domain – the domain used in the request
set_id – the set id that contains the archetype ids
archetypes – a list of archetype ids that are in the given set