It is here at line 3 that the dispatching to the root deserializer occurs, when the unmarshall method is called.
当调用unmarshall方法时，就是在第3行这里发生到根序列化器的调度。
The general approach is to create a converter for objects that you are already using in your application code and simply want to marhsall/unmarshall them onto JMS.
通常情况是创建一个针对对象的转换器，这些对象是你已经在系统代码中使用到的，并且你只是想将它们marshall或者unmarshall成为JMS（译者注：marshall/unmarshall，指将对象序列化为消息对象以及逆向过程。）
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