{"ast_node_type":"variable","tokens":[{"end":41,"kind":"keyword","start":0,"text":"let"}]}
        let args = tcx.mk_args_from_iter(
        let args = self.lower_generic_args_of_assoc_item(span, assoc_item, segment, parent_args);
            std::iter::once(ty::GenericArg::from(self_ty))