如何使用JAXB构建映射XML结构的Java对象？

<speak>
    <voice name="zh-cn-yunxineural">我是
        <break time="1000ms" />张三
    </voice>
    <voice name="zh-cn-xiaoxiaoneural">他是
        <break time="100ms" />李四
    </voice>
</speak>

@data
@xmlaccessortype(xmlaccesstype.field)
@xmlrootelement(name = "voice")
public class voicexbj {
    @xmlattribute
    private string name;
    @xmlmixed
    @xmlelementref(type = breakxbj.class)
    private list<object> content;
}

@data
@xmlaccessortype(xmlaccesstype.field)
@xmlrootelement(name = "break")
public class breakxbj {
    @xmlattribute
    private string time;
}

voicexbj voice = new voicexbj();
voice.setname("yunxi");
breakxbj breakxbj = new breakxbj();
breakxbj.settime("1000ms");
list<object> breaklist = new arraylist<>();
breaklist.add("我是");
breaklist.add(breakxbj);
breaklist.add("张三");
voice.setcontent(breaklist);
list<voicexbj> voicelist = new arraylist<>();
voicelist.add(voice);

voicexbj voice1 = new voicexbj();
voice1.setname("xiaomeng");
breakxbj breakxbj1 = new breakxbj();
breakxbj1.settime("100ms");
list<object> breaklist1 = new arraylist<>();
breaklist1.add("他是");
breaklist1.add(breakxbj1);
breaklist1.add("李四");
voice1.setcontent(breaklist1);
voicelist.add(voice1);

speakxbj xbj = new speakxbj();
xbj.setvoice(voicelist);

string xml = xmlutil.converttoxml(xbj);

<?xml version="1.0" encoding="GBK" standalone="yes"?>
<speak version="1.0" xmlns="http://www.w3.org/2001/10/synthesis" xmlns:mstts="http://www.w3.org/2001/mstts" xmlns:emo="http://www.w3.org/2009/10/emotionml" xml:lang="zh-CN">
    <voice name="Yunxi">我是
        <break time="1000ms" />张三</voice>
    <voice name="Xiaomeng">他是
        <break time="100ms" />李四</voice>
</speak>