{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"AngleBracketedArg::Constraint(c)"}]}
                AngleBracketedArg::Constraint(c) => Either::Left(c.span),
            data.args.iter().partition_map(|arg| match arg {
                AngleBracketedArg::Arg(a) => Either::Right(a.span()),