{"ast_node_type":"other","tokens":[{"end":55,"kind":"keyword","start":0,"text":"RegionElement::RootUniversalRegion(r)"}]}
            RegionElement::RootUniversalRegion(r) => r,
            RegionElement::Location(l) => self.find_sub_region_live_at(longer_fr, l),
            RegionElement::PlaceholderRegion(error_placeholder) => self