我有以下XML结构(基于Qt文件格式)来反序列化：

<context>
    <name>General</name>
    <message>
        <source>One</source>
        <translation>One</translation>
    </message>
    <message>
        <source>Two</source>
        <translation>Two</translation>
    </message>
    <message numerus="yes">
        <source>Thing</source>
        <translation>
            <numerusform>Thing</numerusform>
            <numerusform>Things</numerusform>
        </translation>
    </message>
</context>

解析这一点的Kotlin代码：

data class Context(@JacksonXmlProperty(localName = "name")
                   val name: String = "",
                   private val mMap: MutableList<Message> = mutableListOf()) {
    @JacksonXmlElementWrapper(useWrapping = false)
    @JacksonXmlProperty(localName = "message")
    var messages = mMap
        set(value) {
            field.addAll(value); return
data class Message(@JacksonXmlProperty(localName = "numerus", isAttribute = true)
                   val numerus: String? = null,
                   @JacksonXmlProperty(localName = "source")
                   val source: String? = null,
                   @JacksonXmlProperty(localName = "comment")
                   val comment: String? = null,
                   @JacksonXmlProperty(localName = "translation")
                   val translation: Translation? = null)
data class Translation(@JacksonXmlProperty(localName = "type", isAttribute = true)
                       val type: String? = null,
                       @JacksonXmlProperty(localName = "innerText")
                       @JacksonXmlText
                       val text: String? = null,
                       private val numerusMap: MutableList<NumerusForm> = mutableListOf()) {
    // custom setter because otherwise the list isn't assembled correctly
    @JacksonXmlElementWrapper(useWrapping = false)
    @JacksonXmlProperty(localName = "numerusform")
    var numerusForm = numerusMap
        set(value) {
            field.addAll(value); return
data class NumerusForm(@JacksonXmlProperty(localName = "innerText")
                       @JacksonXmlText
                       val text: String? = null
)

如果只有

<translation 
   <numerusform>Thing</numerusform>
</translation> 

XML中可用的属性。只要我有了 <translation>One</translation> ，它就会崩溃。

是否知道如何解析这个仅偶尔出现在XML结构中的属性，而不会影响文件的其余部分?