{"ast_node_type":"other","tokens":[{"end":66,"kind":"keyword","start":0,"text":"GenericParamDataRef::TypeParamData(param)"}]}
                    GenericParamDataRef::TypeParamData(param) => {
                    GenericParamDataRef::LifetimeParamData(_) => error_lifetime().cast(Interner),
                        if !infer_args && param.default.is_some() {