Component discovery is a design exercise to determine structure and logical boundaries: which data and behaviors to place in one component and which data and behaviors belong elsewhere.

组件发现是确定结构和逻辑边界的设计活动：即哪些数据和行为要放置在一个组件中，而哪些数据和行为属于其他组件。

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We would like to separate the button-specific logic from the callback logic, such that each logical component becomes simpler, more modular, and more reusable.

我们可以把按钮类的逻辑从回调逻辑中分离出来，这样每一个逻辑组件变得更加简单，更模块化，更可重用化。

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The component of the broker that converts a bit stream into a logical message tree (parsing), and a logical message tree back into a bit stream (serializing or writing), is called a parser.

将位流转换为逻辑消息树（解析）以及将逻辑消息树转换回位流（序列化或编写）的代理组件称为解析器。

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