{"ast_node_type":"other","tokens":[{"end":69,"kind":"keyword","start":0,"text":"GenericArgData::Ty(ty)"}]}
                GenericArgData::Ty(ty) => ty.inference_var(Interner),
            let iv = match var.data(Interner) {
                GenericArgData::Lifetime(lt) => lt.inference_var(Interner),