{"ast_node_type":"other","tokens":[{"end":73,"kind":"keyword","start":0,"text":"write!(wr,"}]}
            write!(wr, "[{:?} of kind {:?} reads", ln, self.ir.lnks[ln]);
            let wr = &mut wr as &mut dyn Write;
            self.write_vars(wr, |var| self.rwu_table.get_reader(ln, var));