{"ast_node_type":"other","tokens":[{"end":56,"kind":"keyword","start":0,"text":"getopts::Fail::ArgumentMissing(ref"}]}
            getopts::Fail::ArgumentMissing(ref opt) => {
                .map(|(flag, _)| format!("{e}. Did you mean `-{flag} {opt}`?")),
                optgroups.iter().find(|option| option.name == opt).map(|option| {