{"ast_node_type":"other","tokens":[{"end":43,"kind":"keyword","start":0,"text":"GenericArgKind::Type(ty)"}]}
            GenericArgKind::Type(ty) => ty,
        tcx.mk_type_list_from_iter(self.iter().map(|arg| match arg.kind() {
            _ => bug!("`into_type_list` called on generic arg with non-types"),