It becomes a service bus once you add rule objects for routing and policy management within the virtual provider.
一旦在虚拟提供者中添加了用于路由和策略管理的规则对象，它就成为了服务总线。
Note that the virtual provider, if used as a service integrator, becomes a service bus, if we also add rule objects for routing and policy management within the virtual provider (service integrator).
请注意，如果将虚拟提供者作为服务集成器使用，同时我们又在虚拟提供者(服务集成器)中添加了用于路由和策略管理的规则对象，那么它就变成了服务总线。
Add rule services to workflow.
向工作流中添加规则服务。
Step 3: Add rule services to workflow.
步骤3：向工作流中添加规则服务。
Step 3: Add rule services to workflow.
步骤3：向工作流中添加规则服务。
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