{"ast_node_type":"other","tokens":[{"end":59,"kind":"keyword","start":0,"text":"if"}]}
        if self.tcx.impl_trait_ref(impl_def_id).is_none() {
        let impl_def_id = self.tcx.hir_get_parent_item(ii.hir_id());
            self.check_missing_stability(ii.owner_id.def_id);