{"ast_node_type":"variable","tokens":[{"end":97,"kind":"keyword","start":0,"text":"let"}]}
            let armless = (!is_fat_arrow && !is_almost_fat_arrow && pat.could_be_never_pattern())
            // the pattern isn't a never pattern (and thus an arm body is required)
                || matches!(this.token.kind, token::Comma | token::CloseBrace);