我有这样JSON对象

{
"codemap":{
"codeOfItem1":"titleOfItem1",
"codeOfItem2":"titleOfItem2",
"codeOfItem3":"titleOfItem3",
"codeOfItem4":"titleOfItem4"
},
"items":{
"titleOfItem1":{
"attribute1":"value1",
"atttribute2":{
"subattr1":"value1_of_subattr1_for_item1",
"subattr2":"value1_of_subattr2_for_item1"
}
},
"titleOfItem2":{
"attribute1":"value2",
"atttribute2":{
"subattr1":"value1_of_subattr1_for_item2",
"subattr2":"value1_of_subattr2_for_item2"
}
},
"titleOfItem3":{
"attribute1":"value2",
"atttribute2":{
"subattr1":"value1_of_subattr1_for_item3",
"subattr2":"value1_of_subattr2_for_item3"
}
},
"titleOfItem4":{
"attribute1":"value2",
"atttribute2":{
"subattr1":"value1_of_subattr1_for_item4",
"subattr2":"value1_of_subattr2_for_item4"
}
}
}
}

如何在Kotlin中使用GSON解析它？（问题是像titleOfItemXXX这样的字符串在codemapMap中既是值，又是itemsMap中的键名
我不太喜欢像How to parse this Json with no object name那样完全手动方式
更新：我不想得到这样的方案（这是从Kotlin-to-JSON Android Studio插件）

import com.google.gson.annotations.SerializedName

data class x1(
    @SerializedName("codemap")
    val codemap: Codemap,
    @SerializedName("items")
    val items: Items
) {
    data class Codemap(
        @SerializedName("codeOfItem1")
        val codeOfItem1: String, // titleOfItem1
        @SerializedName("codeOfItem2")
        val codeOfItem2: String, // titleOfItem2
        @SerializedName("codeOfItem3")
        val codeOfItem3: String, // titleOfItem3
        @SerializedName("codeOfItem4")
        val codeOfItem4: String // titleOfItem4
    )

    data class Items(
        @SerializedName("titleOfItem1")
        val titleOfItem1: TitleOfItem1,
        @SerializedName("titleOfItem2")
        val titleOfItem2: TitleOfItem2,
        @SerializedName("titleOfItem3")
        val titleOfItem3: TitleOfItem3,
        @SerializedName("titleOfItem4")
        val titleOfItem4: TitleOfItem4
    ) {
        data class TitleOfItem1(
            @SerializedName("attribute1")
            val attribute1: String, // value1
            @SerializedName("atttribute2")
            val atttribute2: Atttribute2
        ) {
            data class Atttribute2(
                @SerializedName("subattr1")
                val subattr1: String, // value1_of_subattr1_for_item1
                @SerializedName("subattr2")
                val subattr2: String // value1_of_subattr2_for_item1
            )
        }

        data class TitleOfItem2(
            @SerializedName("attribute1")
            val attribute1: String, // value2
            @SerializedName("atttribute2")
            val atttribute2: Atttribute2
        ) {
            data class Atttribute2(
                @SerializedName("subattr1")
                val subattr1: String, // value1_of_subattr1_for_item2
                @SerializedName("subattr2")
                val subattr2: String // value1_of_subattr2_for_item2
            )
        }

        data class TitleOfItem3(
            @SerializedName("attribute1")
            val attribute1: String, // value2
            @SerializedName("atttribute2")
            val atttribute2: Atttribute2
        ) {
            data class Atttribute2(
                @SerializedName("subattr1")
                val subattr1: String, // value1_of_subattr1_for_item3
                @SerializedName("subattr2")
                val subattr2: String // value1_of_subattr2_for_item3
            )
        }

        data class TitleOfItem4(
            @SerializedName("attribute1")
            val attribute1: String, // value2
            @SerializedName("atttribute2")
            val atttribute2: Atttribute2
        ) {
            data class Atttribute2(
                @SerializedName("subattr1")
                val subattr1: String, // value1_of_subattr1_for_item4
                @SerializedName("subattr2")
                val subattr2: String // value1_of_subattr2_for_item4
            )
        }
    }
}

因为我并不真正知道我将拥有多少项以及它们在生产中将使用哪些名称。