{"ast_node_type":"other","tokens":[{"end":87,"kind":"keyword","start":0,"text":"(Some(TokenDescription::MetaVar(kind)),"}]}
        (Some(TokenDescription::MetaVar(kind)), _) => format!("`{kind}` metavariable"),
        // Deliberately doesn't print `s`, which is empty.
        (None, TokenKind::NtIdent(..)) => format!("identifier `{s}`"),