{"ast_node_type":"other","tokens":[{"end":80,"kind":"keyword","start":0,"text":"ASSOC_TYPE_ARG"}]}
            ASSOC_TYPE_ARG => GenericArg::AssocTypeArg(AssocTypeArg { syntax }),
        let res = match syntax.kind() {
            CONST_ARG => GenericArg::ConstArg(ConstArg { syntax }),