The above code defines what a Customer class does, but we need to create some actual customer objects before we run a simulation.
上述代码定义了Customer类的操作，但我们需要在运行模拟之前，创建一些实际的顾客对象。
Using business item instances in a simulation can be useful, particularly if you want to test your logic, or run a simulation based on real data.
在模拟中使用业务项实例非常有用，特别是希望测试逻辑或者根据实际数据运行模拟时更是如此。
If you want to run a simulation with actual production data, you can import it from XML so that you do not have to create each of the business item instances by hand.
如果希望使用实际生产数据运行模拟，则可以从XML中将其导入，这样就不必手动创建每个业务项实例。
If you want to run a simulation with actual production data, you can import it from XML so that you do not have to create each of the business item instances by hand.
如果希望使用实际生产数据运行模拟，则可以从XML中将其导入，这样就不必手动创建每个业务项实例。
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