public void ProcessOrder(Order order)
{
if (order.Total >= approved_amount)
{
order.Approved();
}
else
{
if(sucessor == null) throw new Exception("no one can approve this order. go talk to the president");
sucessor.ProcessOrder(order);
}
}
void approveOrder(Order order)
{
var purchaser = new JrPurchaser();
purchaser.ProcessOrder(order);
}