{"ast_node_type":"other","tokens":[{"end":49,"kind":"keyword","start":0,"text":"ast::GenericArg::ConstArg(const_arg)"}]}
        ast::GenericArg::ConstArg(const_arg) => {
        ast::GenericArg::AssocTypeArg(_) => None,
            param_name::get_segment_representation(&const_arg.expr()?).map(Either::Left)