树构建器 （模块 com.icl.saxon.Builder ）被通知这些事件，并使用它们来构造 XML 文档的内存表示法。
The tree builder (module com.icl.saxon.Builder) is notified of these events, and uses them to construct an in-memory representation of the XML document.
消息管理模块的主要功能是在通信应用程序之间建立一条高效的消息通知渠道，在域间进行异步事件信息传递。
The main function of information management module is to establish a highly efficient channel to transfer events asynchronously between the domains.
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