如何使用moshi将房间关系变成嵌套的json？

如何解决如何使用moshi将房间关系变成嵌套的json？

假设我有一个狗和主人的 POJO：

    @Entity
    data class Dog(
        @PrimaryKey val dogId: Long,val dogOwnerId: Long,val name: String,val cuteness: Int,val barkVolume: Int,val breed: String
    )

    @Entity
    data class Owner(@PrimaryKey val ownerId: Long,val name: String)

然后我定义一个一对多的关系来得到一个所有者和他对应的狗

    data class OwnerWithDogs(
         @Embedded val owner: Owner,@Relation(
              parentColumn = "ownerId",entityColumn = "dogOwnerId"
         )
         val dogs: List<Dog>
    )

然后 Dao 提供新定义的关系

    @Query("SELECT * FROM Owner")
    fun getDogsAndOwners(): List<OwnerWithDogs>

现在为了将 OwnerWithDogs 转换为 json，我在关系模型和 POJO 中声明了 moshi 适配器：

    @JsonClass(generateAdapter = true)  //<---
    data class OwnerWithDogs(
         @Embedded val owner: Owner,entityColumn = "dogOwnerId"
         )
         val dogs: List<Dog>
    )

    @Entity
    @JsonClass(generateAdapter = true)  //<---
    data class Dog(
        @PrimaryKey val dogId: Long,val breed: String
    )

    @Entity
    @JsonClass(generateAdapter = true)  //<---
    data class Owner(@PrimaryKey val ownerId: Long,val name: String)

当 DAO 返回一个列表时，我必须声明一个自定义适配器来创建 json

    val type: ParameterizedType = Types.newParameterizedType(List::class.java,OwnerWithDogs::class.java)
    val adapter: JsonAdapter<List<OwnerWithDogs>> = moshi.adapter(type)

现在我获取关系并将其转换为 json：

    val ownerWithDogs: List<OwnerWithDogs> = dao.getDogsAndOwners()
    val json = adapter.toJson(ownerWithDogs)

输出如下：

   [
        "owner": {...},"dogs": [....]
   ]

我怎样才能输出这样的房间关系？：

   [
        "owner": {
            "dogs": [...],...
        }
   ]