通过这样的方式便将OPC 规范定义的接口全部引入到现在的工程
中，以后不需要对这些接口和这些接口的方法进行修改。
如第二章所示，完成一个简单的组件并不复杂。然而对于OPC 服务
器的开发，仅仅接口这一块的工作就比较大。(In this way, the interfaces defined by the OPC specification are all introduced into the current project

There is no need to modify these interfaces and methods for these interfaces later.

As you can see in the second chapter, it's not complicated to complete a simple component. However, for OPC services
Device development, only the interface, this piece of work is relatively large.)