Estou tentando consumir XML usando o SimpleXML da Retrofit 2. Depois de horas lutando com o Kotlin, decidi experimentar a versão Java e a conversão para o Kotlin. E a versão Java funcionou bem ...

erro:

java.lang.RuntimeException: org.simpleframework.xml.core.MethodException: Annotation @org.simpleframework.xml.ElementList(data=false, empty=true, entry=, inline=true, name=entry, required=true, type=void) must mark a set or get method

Eu preciso de uma classe de modelo Kotlin que consiga consumir esse XML. Aqui está a entrada:

<feed>
   <entry>
        <id> someid </id>
        <published> somedate </published>
   </entry>

   <entry>
        <id> someid2 </id>
        <published> somedate2 </published>
   </entry>
</feed>

Versão da classe de modelo Java (funciona bem):

@Root(name = "feed", strict = false)
public class MFeed {
    @ElementList(name = "entry", inline = true)
    private List<MEntry> entriesList;

    public MFeed(List<MEntry> entriesList) {
        this.entriesList = entriesList;
    }

    public MFeed() {
    }

    public List<MEntry> getEntriesList() {
        return entriesList;
    }

    public void setEntriesList(List<MEntry> entriesList) {
    this.entriesList = entriesList;
    }
}

@Root(name = "entry", strict = false)
public class MEntry {

    @Element(name = "id")
    private String id;

    @Element(name = "published")
    private String published;

    public MEntry() {
    }

    public MEntry(String id, String published) {
        this.id = id;
        this.published = published;
    }

    public String getId() {
        return id;
    }

    public void setId(String id) {
        this.id = id;
    }

    public String getPublished() {
        return published;
    }

    public void setPublished(String published) {
        this.published = published;
    }
}

e os modelos Kotlin gerados automaticamente são assim:

@Root(name = "feed", strict = false)
class Feed {
    @ElementList(name = "entry", inline = true)
    private var entriesList: List<MEntry>? = null

    //autogenerated by converter java -> kotlin
    constructor(entriesList: List<MEntry>) {
        this.entriesList = entriesList
    }

    //autogenerated by converter java -> kotlin
    constructor() {}
}

@Root(name = "entry", strict = false)
class Entry {
    @Element(name = "id")
    var id: String? = null

    @Element(name = "published")
    var published: String? = null

    //autogenerated by converter java -> kotlin
    constructor() {}

    //autogenerated by converter java -> kotlin
    constructor(id: String, published: String) {
        this.id = id
        this.published = published
    }
}

Eu servi muito para consumir listas XML, incluindoesta postar,esta eesta. Nenhum funcionou. Talvez eles sejam obsoletos. Alguém enfrentou esse problema?