在本示例中，我们使用状态机实现一个简化订单流程。
In this example, we implement a simplified order process using a state machine.
我们的实例是一个来自银行客户的实际流程，它实现了一个资金订单流程。
Our sample will be a real-life process from a bank customer that implements a funds order process.
流程中的三个步骤将实现为服务，基于单个订单请求的执行线性流就定义了此业务流程。
The three steps in the process would be implemented as services, and the linear flow of execution based on a single order request defines the business process.
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