{"ast_node_type":"other","tokens":[{"end":79,"kind":"keyword","start":0,"text":"self.ident_and_label_to_local_id.insert(dest_id,"}]}
        self.ident_and_label_to_local_id.insert(dest_id, dest_hir_id.local_id);
        let label = opt_label?;
        Some(Label { ident: self.lower_ident(label.ident) })