This type of service discovery is the most complex and unused, often because it requires complex client logic to dynamically interpret the semantics of an unknown service interface.
此类服务发现是最复杂和最不常用，一般原因是它需要复杂的客户端逻辑来动态解释未知服务接口的语义。
The client can still discover a service by using the properties, such as a floor number and document type, but with an unknown service interface.
客户端仍可以使用属性发现服务(如场所编号和文档类型)，但不知道服务接口。
The client can still discover a service by using the properties, such as a floor number and document type, but with an unknown service interface.
客户端仍可以使用属性发现服务(如场所编号和文档类型)，但不知道服务接口。
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