{"ast_node_type":"other","tokens":[{"end":74,"kind":"keyword","start":0,"text":"self.write_vars(wr,"}]}
            self.write_vars(wr, |var| self.rwu_table.get_reader(ln, var));
            write!(wr, "[{:?} of kind {:?} reads", ln, self.ir.lnks[ln]);
            write!(wr, "  writes");