{"ast_node_type":"import","tokens":[{"end":25,"kind":"keyword","start":0,"text":"for"}]}
            for clause in
            // to capture `'a` in e2024 (even though late-bound vars in opaques are not allowed).
                self.tcx.item_bounds(opaque_ty.def_id).iter_instantiated(self.tcx, opaque_ty.args)