{"ast_node_type":"other","tokens":[{"end":84,"kind":"keyword","start":0,"text":"(GenericParamDefKind::Const"}]}
                    (GenericParamDefKind::Const { .. }, GenericArg::Infer(inf)) => {
                        .into(),
                        self.cfcx.ct_infer(Some(param), inf.span).into()