setIcon("minecraft:nether_star")
setTranslatedTitle("advancements.nether.summon_wither.title")
setTranslatedDescription("advancements.nether.summon_wither.description")

addParent("triumph:vanilla/nether/get_wither_skull")

criteria = addCriteria("summoned", "minecraft:summoned_entity")
criteria.setEntityType("wither")