{"ast_node_type":"variable","tokens":[{"end":73,"kind":"keyword","start":0,"text":"let"}]}
        let symbol_name = self.tcx.symbol_name(instance).name.to_owned();
    fn mangled_name(&self, instance: Instance<'tcx>) -> String {
        if self.tcx.sess.target.is_like_darwin { format!("_{symbol_name}") } else { symbol_name }