def stop_instances(self, parameters):
    instance_ids = parameters[self.PARAM_INSTANCE_IDS]
    conn = self.open_connection(parameters)
    conn.stop_instances(instance_ids)
    AppScaleLogger.log('Stopping instances: '+' '.join(instance_ids))
    if not self.wait_for_status_change(parameters, conn, 'stopped',
           max_wait_time=120):
      AppScaleLogger.log("re-stopping instances: "+' '.join(instance_ids))
      conn.stop_instances(instance_ids)
      if not self.wait_for_status_change(parameters, conn, 'stopped',
            max_wait_time=120):
        self.handle_failure("ERROR: could not stop instances: " + \
            ' '.join(instance_ids))
A right delimiter was encountered.
dataset/ETHPy150Open AppScale/appscale-tools/lib/agents/ec2_agent.py/EC2Agent.stop_instances--crossover with--dataset/ETHPy150Open Julian/Condent/condent.py/Condenter.visit_RightDelimiter