还支持文件名模式。
如果您离开文件名模式，那么指定事件类型的各个处理器都会被删除。
If you leave off the filename pattern, then every handler for the specified event type is removed. You could remove all the FocusLost handlers in the Unfocussed group like so.
GBean可以注册一个兴趣，以便知道遵守特定文件名模式的其他GBean何时运行。
A GBean can register an interest in knowing when other GBeans that follow a specific filename pattern are running.
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